795 results match your criteria Orthodontic Waves [Journal]


Gene evolution and functions of extracellular matrix proteins in teeth.

Orthod Waves 2013 Mar 23;72(1):1-10. Epub 2013 Feb 23.

Laboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20814, USA.

The extracellular matrix (ECM) not only provides physical support for tissues, but it is also critical for tissue development, homeostasis and disease. Over 300 ECM molecules have been defined as comprising the "core matrisome" in mammals through the analysis of whole genome sequences. During tooth development, the structure and functions of the ECM dynamically change. Read More

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http://dx.doi.org/10.1016/j.odw.2013.01.040DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3607546PMC
March 2013
2 Reads

[The present states and considerations of orthognathic surgery in Japan. Questionnaire in department of orthodontics of university dental hospital, and department of oral surgery of university medical hospital].

Nihon Kyosei Shika Gakkai Zasshi 1990 Dec;49(6):538-44

Department of Orthodontics, Niigata University.

To investigate the present state of orthognathic surgery, questionnaires were sent to 30 departments of orthodontics of university dental hospital and 60 departments of oral surgery of university medical hospital. 1. Orthognathic surgery was carried out in 100% of the departments of orthodontics and 91. Read More

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December 1990
3 Reads

[Morphological and functional analysis of dento-orofacial complex in monozygotic twins with Duchenne type muscular dystrophy].

Nihon Kyosei Shika Gakkai Zasshi 1990 Dec;49(6):522-37

Department of Orthodontics, Kyushu University.

The form of dento-orofacial complex and masticatory muscle function of monozygotic twins with Duchenne type muscular dystrophy were investigated. They had no environmental difference. Morphological analysis were performed on the dental casts and cephalograms. Read More

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December 1990
3 Reads

[Correlation between morphologies of mandibular vertical sections and linear measurements of the skull].

Nihon Kyosei Shika Gakkai Zasshi 1990 Dec;49(6):511-21

Department of Orthodontics, School of Dentistry at Matsudo, Nihon University.

The purpose of this study is to evaluate the relationships between the sectional forms of the mandible and the craniofacial morphology. Vertical sections were made at the symphysis (SY) and at the second molar region (M2R). Materials were dried human skulls which were measured in three dimensional co-ordinate system. Read More

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December 1990
2 Reads

[A long-term study on dentofacial changes after sagittal splitting osteotomies in skeletal Class III malocclusions].

Nihon Kyosei Shika Gakkai Zasshi 1990 Dec;49(6):497-510

Department of Orthodontics, Niigata University.

The purpose of this study is to clarify the long-term dentofacial changes after sagittal splitting ramus osteotomy in skeletal Class III patients, and to study the factors involved to find its countermeasures. For this purpose we used the radiographic cephalograms in 16 patients (13 females and 3 males) observed for more than five years after surgery. We measured the postoperative changes in the position of Pogonion and the inclination of maxillary and mandibular incisors. Read More

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December 1990
2 Reads

[Effects of the localized thermal enhancement on new bone formation following mechanical expansion of the rat sagittal suture].

Authors:
H Ogawa

Nihon Kyosei Shika Gakkai Zasshi 1990 Dec;49(6):485-96

Department of Orthodontics, Osaka Dental University.

The purpose of this study was to investigate the effects of localized thermal enhancement on new bone formation in rats. Sixty four male Wistar rats of 52-day old were used as the experimental animal. The sagittal suture of the rat was expanded with the force of 75 g by means of an expansion appliance. Read More

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December 1990
2 Reads

[An immunohistochemical study on the response of nerve fibers in the periodontium of rat molars during experimental tooth movement].

Nihon Kyosei Shika Gakkai Zasshi 1990 Oct;49(5):466-74

Department of Orthodontics, School of Dentistry, Niigata University.

It is well known that orthodontic forces induce pain during tooth movement. However there have been few neurohistological studies on sensational periodontal tissue response to orthodontic tooth movement. So we have many unknown problems about reactions of periodontal nerve fibers during tooth movement. Read More

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October 1990
2 Reads

[Recognition of orthodontic patients and their parents about the orthodontic treatment and results--a questionnaire method].

Nihon Kyosei Shika Gakkai Zasshi 1990 Oct;49(5):454-65

Department of Orthodontics, School of Dentistry, Hiroshima University.

This study was undertaken to investigate the desire and consciousness of orthodontic patients and their parents on the content and effect of orthodontic treatment. The subjects were 362 post-treatment patients and 353 of their parents, who answered the questionnaires. The following conclusions were obtained: 1. Read More

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October 1990
2 Reads

[Psychological study of questionnaire relating to dentition and orthodontic treatment].

Nihon Kyosei Shika Gakkai Zasshi 1990 Oct;49(5):443-53

Department of Orthodontics, School of Dentistry, Tokushima University.

Concern of patients for dentition and receptivity of orthodontic treatment was studied by a general population questionnaire. Subjects (general population) consisted of elder elementary school boys and girls (157), junior high school (274) and high school students (90) and adults (45) in Tokushima, Kagawa and Kouchi prefectures. Twenty-three questions, previously selected from forty-seven using the Quantification III for orthodontic patients. Read More

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October 1990
2 Reads

[Tooth formation and eruption in skeletal Class II and Class III malocclusions].

Nihon Kyosei Shika Gakkai Zasshi 1990 Oct;49(5):435-42

Department of Orthodontics, School of Dentistry, Tohoku University.

The purpose of this study was to investigate the timing of the formation and eruption of the permanent teeth between Skeletal Class II and Class III malocclusions right before pubertal growth period. Samples consisted of twenty five Japanese girls of Class II and Class III malocclusions, respectively, with Class I girls as a control. Materials used in this study were panoramic X-rays, dental X-rays and intraoral photographs of each sample, all taken at age of 8 years. Read More

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October 1990
2 Reads

Effects of complete separation of condyle on the facial growth of growing rats.

Nihon Kyosei Shika Gakkai Zasshi 1990 Oct;49(5):421-34

Department of Orthodontics, School of Dentistry, Aichi-Gakuin University.

Normal mastication needs condylar support. Mandibular condyle is thought to be one of the factors which control facial growth. To determine which parts of the face are affected by unilateral complete condylotomy including surrounding connected soft tissues, thirty-nine male Wistar rats, 5 weeks of age, were divided into control, sham treated and experimental groups. Read More

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October 1990
2 Reads

[Tooth movement of an impacted lower 2nd premolar in the root developmental stage--a follow-up radiographic observation on the root formation].

Authors:
N Ohya T Ohya

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):379-91

Department of Oral Anatomy, Osaka Dental University.

A 9 year old girl presented an impacted lower right 2nd premolar which not only was in horizontal position, but its crown was directed lingually. As a lower right 2nd premolar was in such a position that normal eruption was impossible, the deciduous predecessor was extracted at 9 years of age, and then sufficient space had been created for the lower right 2nd premolar to be erupted, and the eruption of it was observed for about 2 years. 2 years later, radiographic indication showed that no spontaneous eruption of a lower right 2nd premolar was to be expected. Read More

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August 1990
7 Reads

[Clinical investigation of orthodontic treatment of palatally impacted canines, using ballista spring appliance].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):369-78

Department of Orthodontics, Ohu University School of Dentistry.

Impacted maxillary caries are often treated in the orthodontic practice. However palatally impacted maxillary canines occur in a small. They require active orthodontic traction in those cases in which surgical exposure alone will not be enough to erupt. Read More

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August 1990
5 Reads

[A study to establish the model of transseptal fibers in vitro by human gingival fibroblast].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):362-8

Department of Orthodontics, Tokushim University.

The present study was attempted to establish the model of transseptal fibers in vitro to clarify the remodeling mechanisms of the fibers during orthodontic treatment. Human premolars were transversally cut. The thickness of films was 150 microns and a pair of dental rings was placed at intermediate of 500 microns in tissue culture dishes. Read More

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August 1990
1 Read

Effect of micro-pulsed electricity on experimental tooth movement.

Authors:
H Hashimoto

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):352-61

Department of Orthodontics, Osaka Dental University.

The purpose of this study was to determine whether a micro-pulsed electrical potential on the tooth surface could induce effective remodeling of the alveolar bone and enhance tooth movement. Twenty-eight cats were divided into 4 groups of 7 animals each for 1, 4, 7, and 14 days of treatment, respectively. A 60 gram orthodontic force was applied to distally tip the maxillary canines. Read More

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August 1990
2 Reads

[The clinical study on occurrence of TMJ dysfunction in orthodontic patients].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):341-51

Department of Orthodontics, Hokkaido University.

Occlusal disharmony is considered to be the most significant factor of temporomandibular joint (TMJ) dysfunction, but the relationship between malocclusion and TMJ dysfunction has been unknown yet. The purpose of present study was to investigate the relationship between TMJ dysfunction and occlusal disharmony (eccentric occlusal contacts and functional shift of the mandible) in orthodontic patients. The subjects were 533 orthodontic patients, 209 males and 324 females, who were received at the Department of Orthodontics, School of Dentistry, Hokkaido University from April 1985 to March 1988. Read More

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August 1990
2 Reads

[Study on the simulation in planning for orthognathic surgery by using a personal computer].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):331-40

Department of Orthodontics, Niigata University School of Dentistry.

This study was made in order to develop and evaluate three-dimensional simulation programs in planning for orthognathic surgery by using microcomputer system. Microcomputer system is composed of CPU (NEC, PC-9801), high resolutional color display, color printer, image scanner, and MOUSE. This simulation is composed of four procedures. Read More

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August 1990
2 Reads

[Importance of posterior tooth-to-denture base discrepancy in the development of skeletal open-bite malocclusion].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):322-30

Department of Orthodontics, Kanagawa Dental College.

This paper describes the relationship between the development of skeletal open-bite malocclusion and the tooth-to-denture base discrepancy. The cases which have a severe skeletal open-bite malocclusion are presented to evaluate the causing factor of the anterior open-bite. The anterior open-bite was associated with inferiorly positioned maxillary molars caused by the squeezing out effect of the tooth-to-denture base discrepancy, especially those in posterior part of dentition (posterior discrepancy), which provided a less steep maxillary occlusal plane in the denture frame. Read More

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August 1990
3 Reads

[Multivariate analysis for the study of craniofacial structure. Selection of parameters on using the principal component analysis].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):314-21

Department of Orthodontics, Tohoku University.

The present study was undertaken to discuss the effects of parameters on using the principal component analysis for the evaluation of the craniofacial structures. Materials consisted of lateral roentgenocephalograms of 100 adult Japanese females. They were divided into three groups by ANB angle. Read More

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August 1990
4 Reads

[On eruption of mandibular third molar after extraction of mandibular first or second molar].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):302-13

Department of Orthodontics, Hiroshima University.

In the orthodontic practice, the first or second molars are extracted by reason of a necessity based on the treatment planning. In these cases, it is desirable that the third molar would be taken part in the masticatory function. This study was made to investigate the natural movement of the erupting third molars after the extraction of the first or second molar on the serial lateral cephalometric radiographs and orthopantomographs. Read More

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August 1990
3 Reads

[Three-dimensional morphological analysis for craniofacial deformity].

Nihon Kyosei Shika Gakkai Zasshi 1990 Aug;49(4):291-301

Department of Orthodontics, Hokkaido University.

Morphological analysis of the craniofacial deformity has been performed by cephalometric radiography, but even with this method, it is difficult to analyze the cases with complicated deformity. The purpose of the present study is to develop the new 3-D CT morphological analyzing system in order to investigate complicated craniofacial deformity. Using the 67 landmarks, we established the 3 D line drawing method. Read More

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August 1990
2 Reads

[The application of repelling magnets to distal movement of maxillary molars. Report of three cases].

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):276-81

Department of Orthodontics, Fukuoka Dental College.

Report on three cases of maxillary first molar distalization with the aid of intra-arch repelling magnets were presented in this paper. Two cases were Class II malocclusion and one was a Class I discrepancy case whereby all resulted in rapid distalization of the upper first molars into Class I molar relationship in a relatively short time. Despite the unwanted rotation and tipping of the molars and the anteriors occurred slightly, numerous advantages of the repelling magnetic system were noted applicable to early mixed dentition cases to obtain the sufficient space of the molars rapidly. Read More

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June 1990
2 Reads

[Longitudinal observation of condylar position in anterior crossbite at the mixed dentition during orthodontic treatment].

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):263-75

Department of Orthodontics, Tokyo Dental College.

We investigated the condylar position by transcranial radiography which can be put daily clinical use easily. The patients are 8 anterior crossbite at the mixed dentition (4 functional crossbite and 4 skeletal crossbite). We observed their condylar positions before treatment (average age is 9. Read More

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June 1990
3 Reads

[Investigation of the facial symmetry of cases with cross bites needing surgical orthodontic treatment using postero-anterior roentgenographic cephalometrics].

Authors:
O Aoshima

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):256-62

Department of Orthodontics, Nihon University School of Dentistry at Matsudo.

Of the patients who visited the Dental Hospital (Orthodontic Treatment Section), Nihon University School of Dentistry at Matsudo, and received surgical orthodontic treatment for mandibular protrusions (true Class III), 30 (12 with cross bite and 18 without) were selected as study subjects. Postero-anterior roentgenographic cephalometrics were taken of these subjects and, based on these cephalograms, facial symmetry was investigated using an analytical method devised by this study. The results can be summarized as follows. Read More

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June 1990
2 Reads

[A study of dynamics of orthodontic archwire on the dental arch. 1. Distribution of orthodontic forces during labial movement of bilateral incisors].

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):247-55

Department of Orthodontics, Nihon University.

The study on labial movement of maxillary unilateral incisor had been reported previously. This study was the case of maxillary bilateral incisors. Orthodontic forces during labial movement of maxillary bilateral incisors which were produced by stainless steel archwire with vertical loops and nickel titanium archwire, were measured and were examined the distribution of orthodontic forces to the dental arch in the experimental apparatus with strain gauges. Read More

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June 1990
2 Reads

[An evaluation of 3-dimensional position of mandibular condyle to glenoid fossa using tomogram: an analytical technique and its clinical application].

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):237-46

Department of Orthodontics, Osaka University Faculty of Dentistry.

In recent years, temporomandibular disorder (TMD) is occasionally found among orthodontic patients and has become a great concern in orthodontics. From this point of view, a certain technique has been hopefully anticipated for diagnosis and treatment planning. The purpose of this study was to develop a new method for evaluating three-dimensional position of the mandibular condyle relative to the glenoid fossa and also to investigate its clinical application. Read More

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June 1990
2 Reads

[Effects of periodic tension on osteoblast-like cells for cell differentiation and alkaline phosphatase activity].

Authors:
K Miyajima

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):226-36

Department of Orthodontics, Aichigakuin University.

Bone remodeling requires bone resorption and formation. Bone formation involves osteoblastic activity. Both intermittent and continuous mechanical forces have been proved to affect osteoblast differentiation in vivo. Read More

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June 1990
2 Reads

[Experimental study of the trajectories of the upper first molar with extraoral force. Practical measurement of the movements in the three planes by a magnet-magnetic sensing system].

Authors:
N Yoshida

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):207-17

Department of Orthodontics, Nagasaki University.

The upper first molar trajectory under the loading of extraoral force was studied in human subjects. The five loading directions, that is horizontal, upper, lower, high-pull and cervical were tested. Using a magnet-magnetic sensing system, the rectilinear and rotational movements were traced in the three planes, i. Read More

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June 1990
3 Reads

[Changes of frontal facial form occurred after correction of anterior reversed occlusion in children with TMJ dysfunction].

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):199-206

Department of Oral & Maxillofacial Surgery, Yamanashi Medical College.

The purpose of this study was to investigate the facial pattern of early childhood patient with temporomandibular joint (TMJ) dysfunction (clicking) occurred after anterior cross-bite correction. Chin cap appliance was engaged in all cases, with or without minor intraoral mechano-therapy. Materials were consisted of postero-anterior cephalograms of 50 Japanese patients (6-9 years old), all showing anterior cross-bite with normal function of TMJ at pre-treatment stage. Read More

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June 1990
4 Reads

A serial study on the development of the temporomandibular joint in the fetal mouse--in particular on the fibrous component in the condylar cartilage.

Authors:
M Kagawa

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):187-98

Department of Orthodontics, Osaka Dental University.

The development of the temporomandibular joint of 400 fetal mice at stages ranging from the 13th to the 20th day after insemination was investigated under the light, scanning (SEM) and transmission electron (TEM) microscopes. The differentiation and development of a cartilaginous tissue were observed at the supero-posterior end of the mandible at the 13 days after insemination. This tissue grew backward, upward and lateralward continuously and maintained a constant articulation with the squamosal part of the temporal bone. Read More

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June 1990
2 Reads

[Effect of PTH and periodic tension on osteoblast-like cells for collagenase synthesis].

Authors:
K Miyajima

Nihon Kyosei Shika Gakkai Zasshi 1990 Jun;49(3):218-25

Department of Orthodontics, Aichigakuin University.

The purpose of the present study was to determine whether cyclically applied tension stimulates osteoblast-like cells to produce collagenase as well as parathyroid hormone (PTH) does. Experimental evidences suggest that osteoblast growth can be altered by various extrinsic control factors, including continuous and intermittent mechanical forces. In the present study, morphological change and collagenase synthesis were observed for both cultures that were added PTH and under the periodic tension condition applied on osteoblast-like cells and their parallel controls. Read More

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June 1990
2 Reads

[Reflex responses of human perioral muscles to mechanical stimulation of the vestibular oris mucosa].

Authors:
T Saito

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):87-99

Department of Orthodontics, Niigata University.

To investigate the effects on perioral muscles with mechanical stimulation to the mucosa electromyograms were recorded in nine subjects. Results were as follows: 1. Tonic excitatory reflex of m. Read More

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April 1990
2 Reads

[The effects of solid or liquified diet on the submandibular glands of mice with age].

Authors:
J H Kim

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):73-86

Department of Orthodontics, Kagoshima University.

The influence of properties of the diets on the retardation of growth of the jaw bones and masticatory muscles has been established. As the intake of liquid foodstuffs increases in the human diet, it is considered possible that these liquid diets may retard the growth of human salivary glands. 180 newborn C3H/He strain male mice were divided into solid and liquid diet groups and then the development and aging of the submandibular glands were observed both in function and morphologically until 60 weeks of age. Read More

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April 1990
2 Reads

[Three orthodontic cases with temporomandibular joint sounds].

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):155-72

Department of Dentistry and Oral Surgery, School of Medicine, Keio University.

Three orthodontically treated cases with sounds of the temporomandibular joint are presented. Case 1: Eight months after [formula: see text] extraction, bilateral TMJ sounds were noticed. The patient had a history of pre-orthodontic TMJ sounds and locking. Read More

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April 1990
3 Reads

[A case of cleft lip and palate patient with basilar impression].

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):147-54

Department of Orthodontics, Aichigakuin University.

Basilar impression is one of bony deformities occurred in the region of the foramen magnum, in which deformity, rim of the foramen magnum or a part of the vertebra impresses into the posterior cranial fossa. Major symptoms of this deformity are short neck, low hair line, torticollis, webbing of neck, pain and limitation of neck movement and various nerve symptoms, when nervous tissue is impressed by rim of the foramen magnum or dens of the second vertebra. This deformity has a characteristic to be found later as a congenital deformity, because nerve symptoms usually do not occur in earlier than 10 years old. Read More

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April 1990
2 Reads

[Relationship between late adolescent growth of mandible and maturity indicators--mandibular third molar, hand bones, body height--in Japanese boys].

Authors:
K Sato H Mitani

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):140-6

Department of Orthodontics, Tohoku University.

The study was undertaken to investigate the individual growth timing of the mandible during late adolescent period. Materials used in this study were lateral cephalometric X-rays, hand bones X-rays, panorama X-rays and data of standing height of eighteen Skeletal Class I Japanese boys, all were longitudinally taken from 15 to 18 years old. Results were as follows: 1. Read More

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April 1990
2 Reads

[An attempt of experimental study to clarify the rearrangement mechanisms of transseptal fibers during mechanical retention periods].

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):132-9

Department of Orthodontics, Tokushima University.

The present investigation has been attempted to clarify the remodeling mechanisms of transseptal fibers during mechanical retention periods. Orthodontic forces of 25 gm and 150 gm were respectively applied to upper molars of rats for 10 days and retained mechanically. Retention periods were 10, 30 and 60 days. Read More

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April 1990
4 Reads

[A histological study on changes in the attachment of deep layer of the masseter muscle after denervation of the masseteric nerve].

Authors:
T Iwasaki

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):118-31

Department of Orthodontics, Niigata University.

To elucidate the histological and histochemical changes on the deep layer of masseter muscle at the site of their attachment to the mandible after masseteric denervation, 35-day old male rats were used in this experiment. The rats were sacrificed at 10 and 20 days after the left masseteric nerve was resected at the mandibular notch. The attachment of deep layer of masseter muscle to the mandible was examined using light microscopy, lead labelling technique (Okada and Mimura 1938), and histochemical analysis for ALPase activity. Read More

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April 1990
2 Reads

[An experimental study of the orthodontic force effect on internal remodeling of mandibular bone].

Authors:
H Maeda H Suzuki

Nihon Kyosei Shika Gakkai Zasshi 1990 Apr;49(2):100-17

Department of Orthodontics, Nagasaki University.

The role of mechanical stress in determining bone structure by influencing its cellular processes during remodeling has been discussed. But previous studies have not provided an adequate background of knowledge to explain the effect of orthodontic force in internal remodeling of the bones. This study was performed to determine the relationship between stress distribution induced by orthodontic force and alteration of internal remodeling in mandibular bone. Read More

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April 1990
2 Reads

[Case of skeletal open bite treated with orthognathic surgery, with special reference to morphological and functional analysis of the tongue].

Nihon Kyosei Shika Gakkai Zasshi 1989 Dec;48(6):623-34

Malfunction and abnormal posture of the tongue has been thought to be one of etiological factors for skeletal open-bite at length. In this study, an adult female patient with anterior open-bite is reported, who has been treated by means of posterior maxillary osteotomy and has obtained a good occlusion and profile, which is stable throughout the retention period. Electromyography was obtained from the tongue muscles by surface electrodes and the tongue muscle activity during deglutition was measured before and after surgery. Read More

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December 1989
2 Reads

[Observation on calcification of necrotic tissue in pressure side of periodontal membrane incident to experimental tooth movement].

Nihon Kyosei Shika Gakkai Zasshi 1989 Dec;48(6):614-22

In an orthodontic point of view, it is said that necrotic tissues cause a standstill of tooth movement until they disappear and that term of the standstill is related to the size of the necrotic tissues. Although remodeling processes of a periodontal membrane in compressed area were reported as series of phenomena like degeneration, coagulative necrosis, calcification and histiolysis, there is no direct evidence that the necrotic tissue is really calcified. The purpose of this study is to clarify histologically whether the necrotic tissues in the periodontal membrane are calcified or not and to know when appearance and disappearance of the calcification occur during an experimental tooth movement. Read More

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December 1989
3 Reads

[Changes of the chewing movements following the correction of anterior reversed occlusion in children].

Authors:
S Kuwahara

Nihon Kyosei Shika Gakkai Zasshi 1989 Dec;48(6):601-13

The purpose of this study was to investigate the functional changes following the orthodontic treatment of anterior reversed occlusion in children. Samples consist of 94 children with anterior reversed occlusion as the experimental group and 34 children with normal incisor occlusion as the control group. Experimental samples were classified into 3 groups according to the erupting stages of incisors. Read More

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December 1989
2 Reads

[Study of bone remodeling mechanism induced by mechanical stress. Differentiation of osteoclasts induced by compressive force in newborn rat cultured long bone].

Authors:
M Chiba

Nihon Kyosei Shika Gakkai Zasshi 1989 Dec;48(6):585-600

The purpose of this investigation was to reveal the mechanism of differentiation of osteoclast (OC) induced by mechanical stress in long bone cultivation of new born rats. A long bone was loaded with 30 gf of continuous compressive force and cultured for 5 days in CO2 incubator. Numbers of OC increased in the long bone were counted after H-E staining and compared with the control. Read More

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December 1989
2 Reads

[Follow-up study of bone grafts to the alveolar clefts].

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):546-52

Clinical follow-up study after the grafting with fresh autogenous iliac bone to the alveolar clefts in cleft lip and palate patients was carried out up to 2 years post operation. Twenty two patients were examined, to whom grafts of iliac cortical or iliac marrow bone was carried out by the First or the Second Department of Oral Surgery, Kagoshima University Dental School from July, 1985 to April, 1988. Their cleft types were classified as 18 unilateral and 4 bilateral cleft lips and palates. Read More

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October 1989
3 Reads

[Repositioner of external fragment of mandibular ramus (ramus repositioner) in sagittal split ramus osteotomy of mandible].

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):553-9

In sagittal ramus split osteotomy of the mandible, rigid internal fixation of the fragments with screws has become one of the main fixation techniques. This screw-fixation has the advantages to reduce the period of intermaxillary fixation which is unpleasant for patients. On the other hand, it is necessary that the condyles are exactly positioned to the glenoid fossa after surgical correction. Read More

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October 1989
3 Reads

[Apical root resorption of maxillary central incisors following orthodontic treatment].

Authors:
A Togari

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):535-45

This research shows the relationship between orthodontic treatment and apical root resorption. The latest edgewise appliance with a pre-adjusted bracket (Alexander method) was used in the present experimentation. Examination by roentgen cephalometry and intraoral radiography was performed before and after the maxillary central incisors had been moved orthodontically. Read More

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October 1989
2 Reads

[Application of the finite element method to craniofacial growth analysis. 4. Three-dimensional application of tensor analysis].

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):521-34

The purpose of this study is the 3-dimensional application of finite element method to analyze the craniofacial growth. In our previous studies, 2-dimensional finite element method was applied to analyze and to predict the craniofacial growth. In case of 2-dimensional application, the normal and shear strains were given by the displacements u, v that were linear functions of coordinates x, y. Read More

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October 1989
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[Effect of two stage corticotomy on maxillary protraction].

Authors:
Y Matsuda

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):506-20

For the purpose of clarifying the effects of two stage corticotomy on maxillary protraction, experimental studies by using of 5 male Japanese monkeys (Macaca fuscata) were performed. Results from cast analysis, roentgenographic cephalometry and histological examinations were as follows. I. Read More

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October 1989
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[Morphological study on open bite patients].

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):496-505

The purpose of the present study is to investigate the morphological features of open bite patients who have also disharmony of anteroposterior relations between maxilla and mandible. Lateral head films of 40 adult females with open bite were used. The samples were classified into three groups by ANB angle. Read More

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October 1989
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[Biodegradable ceramic as a bone graft substitute followed by orthodontic tooth movement].

Nihon Kyosei Shika Gakkai Zasshi 1989 Oct;48(5):483-95

This study was performed to evaluate the histological changes during remodelling of autogenous PMCB (particulate marrow and cancellous bone) and TCPC (beta-tricalcium phosphate ceramic) when transplanted into the jaw bone defects, and also to investigate the possibility of orthodontic tooth movement on them. Twenty dogs were used in this study. Following extraction of the upper 2nd and 3rd incisors, or only the 2nd incisor, maxillary alveolar bones were resected bilaterally. Read More

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October 1989
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