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DANG (Depth-Adjusted Nerve Guide) - A Technical Note.

J Oral Maxillofac Surg 2021 Aug 14. Epub 2021 Aug 14.

Professor and Chair, Department of Oral and Maxillofacial Surgery, University of Illinois at Chicago, Chicago, IL.

Traditional surgical approaches to the inferior alveolar nerve (IAN) pose a technical challenge and risk iatrogenic damage to healthy, uninvolved nerve tissue. The use of computer-assisted virtual surgical planning and fabrication of surgical guides has shown efficacy in various craniomaxillofacial surgical procedures, and may provide greater precision in accessing the inferior alveolar canal and allow for a more conservative approach. The addition of a "depth control feature" to a tooth-borne and bone-borne surgical guide, with the use of a standard contra-angle handpiece, provides safe and efficient access for IAN repair. Read More

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Microvascular Reactivity of Peri-implant Mucosa in Humans: Effect of Abutment Material.

Int J Periodontics Restorative Dent 2021 Sep-Oct;41(5):761-768

The morphology and histology of the soft tissue around the implant are different from the periodontal tissue, but the difference in the regulation of blood flow is not known. The aim of the study was to compare the resting blood flow and the vasodilatation capacity of the gingiva between implants and teeth. Twenty-six healthy volunteers with single-tooth implants were involved. Read More

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September 2021

Marginal Bone and Keratinized Mucosa Alterations Around Sloped Implants Placed in Healed Sloped Crests: A Long-Term Cohort Study.

Int J Periodontics Restorative Dent 2021 Sep-Oct;41(5):733-741

To improve the adaptation to bone level discrepancies of sloped alveolar crests, an implant with a sloped implant-abutment interface has been developed. In a previously reported international multicenter study, 65 sloped implants replaced single teeth with a buccolingual bone level discrepancy at least 3 months after tooth loss. The present study reports the long-term outcomes of one study center and also evaluates marginal bone and keratinized mucosa alterations around sloped implants in healed, sloped crests in a long-term follow-up. Read More

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September 2021

Sealing Ability of New Translucent Zirconia Crowns Made with Digital Workflow and Cemented with Different Types of Cement.

Int J Periodontics Restorative Dent 2021 Sep-Oct;41(5):703-710

This article evaluated the sealing capacity of single crowns made of a new zirconia (Katana STML, Kuraray Noritake) when cemented with two different cement types and two different marginal preparation types. Forty intact human anterior teeth, extracted for periodontal reasons, were used. Each sample was prepared with two margin preparations: knife-edge (KE) on one half of the tooth and chamfer (CH) on the other half. Read More

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September 2021

Buccal Bone Remodeling Around Immediate Implants in STZ-Induced Diabetic Dogs: A Histologic and Microcomputed Tomographic Analysis.

Int J Periodontics Restorative Dent 2021 Sep-Oct;41(5):683-690

Buccal bone remodeling around immediate implants placed in animals with streptozotocin (STZ)-induced diabetes has not been investigated. The present histologic and microcomputed tomography (μCT) in vivo experiment assessed the buccal bone remodeling around immediate implants, extraction socket healing, and bone-to-implant contact (BIC) in dogs with and without STZ-induced diabetes. Three male beagle dogs with STZ-induced diabetes and three healthy dogs (controls) were included. Read More

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September 2021

Histologic Findings 8 Weeks After Customized Alveolar Ridge-Splitting Technique.

Int J Periodontics Restorative Dent 2021 Sep-Oct;41(5):e191-e198

Different techniques have been introduced when replacement with an implant is planned after tooth extraction. The conventional approach consists of waiting 3 to 4 months before implant placement. However, many other options are available for implant placement, including immediate implant placement (IIP), IIP and immediate provisionalization (IIPIP), and early implant placement (EIP). Read More

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September 2021

Treatment of Teeth with an Insufficient Clinical Crown. Part 2: Treatment Cost and Time and Patient Outcomes.

Int J Periodontics Restorative Dent 2021 Sep-Oct;41(5):637-645

This study involves a group of 168 teeth in 126 patients treated with crown lengthening and tooth reconstruction (experimental group), and a group of 75 teeth from 62 patients that were judged irrational to treat, extracted, and replaced (control group). In the control group, 13 teeth in 12 patients were not replaced; 37 were replaced with an implant-supported crown, 14 with a tooth-supported partial denture, 2 with a Maryland partial denture; and 9 patients requested a removable prosthesis. In the experimental group, 44 teeth in 37 patients received a conservative restoration (24 direct and 20 indirect), while 124 teeth in 94 patients received a full crown. Read More

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September 2021

Topical Fluoride Applications Related Posts Analysis on Twitter Using Natural Language Processing.

Oral Health Prev Dent 2021 Jan;19(1):457-464

Purpose: Social media is today a comprehensive source of data that can serve as a guide to professionals in issues related to public health. The purpose of this paper is to investigate the content of topical fluoride-related Twitter posts made over a 3-year period in order to improve our understanding of Twitter users' perceptions and treatment experiences.

Materials And Methods: A continuous cross-sectional sample of Tweets on the subject of 'approaches to the topical fluoride treatment of tooth decay' was collected from the Twitter social networking platform between 1 January 2017 and 1 January 2020 using a software application developed for this research that makes use of the Twitter advanced search API. Read More

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January 2021

Improving intraoral implant scanning with a novel auxiliary device: an in vitro study.

Clin Oral Implants Res 2021 Sep 21. Epub 2021 Sep 21.

Faculty of Dentistry, The University of Hong Kong, Hong Kong special administrative region, China.

Objectives: To develop a novel auxiliary device for improving the accuracy of intraoral implant scanning in the complete-edentulous arch.

Materials And Methods: A standard model of edentulous maxilla with 6 dummy implants was prepared. Scan bodies were attached to the model, which was scanned by a laboratory scanner. Read More

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September 2021

Long-term prognosis of teeth with class III furcation involvement.

J Clin Periodontol 2021 Sep 20. Epub 2021 Sep 20.

Section of Periodontology, Department of Conservative Dentistry, Clinic for Oral, Dental and Maxillofacial Diseases, University Hospital Heidelberg, Heidelberg, Germany.

Objective: Evaluation of survival of teeth with class III furcation involvement (FI) ≥5 years after active periodontal treatment (APT) and identification of prognostic factors.

Methods: All charts of patients having accomplished APT at the Department of Periodontology of Goethe-University Frankfurt, Germany beginning October 2004 were screened for teeth with class III FI. APT had to be accomplished ≥5 years. Read More

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September 2021

Non-carious Cervical Lesions (NCCLs) and associated factors: a multilevel analysis in a cohort study in Southern Brazil.

J Clin Periodontol 2021 Sep 20. Epub 2021 Sep 20.

Radboud University Medical Center, Department of Dentistry, Radboud Institute for Health Sciences, Nijmegen, The Netherlands.

Aim: To investigate the prevalence of Non-carious Cervical Lesions (NCCLs) and the association with individual and tooth-related factors in adults from the 1982 Pelotas Birth Cohort.

Materials And Methods: Participants were interviewed and clinically examined at the age 31. NCCL was defined as loss of dental tissue without bacterial involvement in the cervical region. Read More

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September 2021

Functional Analysis of Ectodysplasin-A Mutations in X-Linked Nonsyndromic Hypodontia and Possible Involvement of X-Chromosome Inactivation.

Stem Cells Int 2021 9;2021:7653013. Epub 2021 Sep 9.

Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China.

Background: Mutations of the Ectodysplasin-A (EDA) gene are generally associated with syndrome hypohidrotic ectodermal dysplasia or nonsyndromic tooth agenesis. The influence of EDA mutations on dentinogenesis and odontoblast differentiation has not been reported. The aim of this study was to identify genetic clues for the causes of familial nonsyndromic oligodontia and explore the underlying mechanisms involved, while focusing on the role of human dental pulp stem cells (hDPSCs). Read More

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September 2021

Spontaneous calcium responses of SF2 rat dental epithelial cells stably expressing the calcium sensor G-GECO.

Biomed Res 2021 ;42(5):193-201

Division of Pharmacology, Department of Oral Biology, School of Dentistry, Health Sciences University of Hokkaido.

Genetically-encoded calcium indicators such as G-GECO are useful for studying Ca responses during long-term processes. In this study, we employed a lentiviral vector and established a rat dental epithelial cell line that stably expressed G-GECO (SF2-G-GECO). Ca imaging analysis under cell culture conditions revealed that SF2-G-GECO cells exhibited spontaneous Ca responses, which could be classified into the following three major patterns depending on the cell density: localized Ca responses at cell protrusions at a low density, a cell-wide spread of Ca responses at a medium density, and Ca responses in clusters of 3-20 cells at a high density. Read More

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January 2021

Effect of firing procedures and layering thickness of porcelain on internal adaptation of zirconia cantilever resin-bonded fixed dental prostheses.

J Prosthodont Res 2021 Sep 17. Epub 2021 Sep 17.

Department of Fixed Prosthodontics, Nihon University School of Dentistry, Tokyo.

Purpose: This study evaluated the influence of firing procedures and layering thickness of porcelain on internal adaptation of maxillary anterior cantilever zirconia resin-bonded fixed dental prostheses (RBFDPs).

Methods: The maxillary right central incisor on a model was prepared for a single-retainer zirconia RBFDP. A total of 36 frameworks of cantilever zirconia RBFDPs were classified into three groups (CB0. Read More

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September 2021

Dentition and body condition: tooth wear as a correlate of weight loss in roe deer.

Front Zool 2021 Sep 20;18(1):47. Epub 2021 Sep 20.

Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100, Sassari, Italy.

Background: In many mammalian species, once the permanent teeth have erupted, the only change to dentition is a gradual loss of tooth surface/height through wear. The crown of the teeth cannot be repaired once worn. When dental crown tissue has been depleted due to wear, the animal is expected to have a suboptimal body condition. Read More

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September 2021

Ecological determinants of effect of a free pit and fissure sealant program in Shanxi, China, 2017-2018.

BMC Oral Health 2021 Sep 20;21(1):458. Epub 2021 Sep 20.

Department of Pediatric and Preventive Dentistry, School and Hospital of Stomatology, Shanxi Medical University, Taiyuan, 030001, China.

Background: The aim of this study is to explore the spatial heterogeneity of the retention of PFS in children aged 7-9 years in Shanxi Province, North China and investigate the risk factors associated with PFS retention.

Methods: In this study, 937 children aged 7-9 years from Shanxi Province, China were randomly selected, all of whom had at least one first permanent tooth sealed with PFS in 2016. The children were surveyed after 12 months (in 2017) and 24 months (in 2018). Read More

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September 2021

Maldevelopment of the cranio-facial-respiratory complex: A Darwinian perspective.

Eur J Paediatr Dent 2021 Sep;22(3):225-229

Department of Health, Life and Environmental Science, University of L'Aquila, L'Aquila, Italy.

Aim: The mammalian Cranio-Facial-Respiratory Complex (CFRC) comprises several different biological tissues that collectively function under coordination from the central nervous and cardiorespiratory systems, primarily to breathe, eat and drink as well as integrating the sensory and motor systems for speech, communication and protective mechanisms. Anthropologists have long recognised that lifelong exposure to modern feeding regimens of readily available and highly processed foods, changes in breastfeeding and weaning, can impact expression of various phenotypic traits affecting the CFRC quite differently than does lifelong exposure to more traditional ancestral feeding regimens, typical of hunter-gather/foraging in non-Western-exposed cultures. The aim of this study is to highlight the role of the paediatric dentist in a multidisciplinary approach in which professionals working in and around the CFRC can actively prevent tooth decay and skeletal-dental malocclusion in the light of evolutionary oral medicine. Read More

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September 2021

Prevalence of retained/transmigrated permanent and persistence of primary teeth associated with odontomas in young children.

Eur J Paediatr Dent 2021 Sep;22(3):215-218

Multidisciplinary Department of Medical-Surgical and Dental Specialties - University of Campania Luigi Vanvitelli, Naples, Italy.

Aim: Odontomas are odontogenic tumours of the jaws; they are generally asymptomatic with an unknown aetiology. This study was conducted on non-syndromic children aged 9 to 14 years to explore the side effects deriving from the presence of these benign tumours, as retention, transmigration, ectopic eruption of permanent teeth and the permanence of primary teeth in the affected area.

Methods: Two hundred panoramic (OPT) and 92 Cone Beam Computed Tomography radiographs (CBCT) of patients (130 males and 70 females) were analysed from February 2018 to December 2019. Read More

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September 2021

Kids Digital Crown Technique: an innovative approach to restore primary teeth.

Eur J Paediatr Dent 2021 Sep;22(3):204-206

University of l´Aquila, Dental Clinic, L´Aquila, Italy.

Aim: The purpose of this clinical case is to present the Kids Digital Crown Technique (KDCT), an innovative technique to restore primary teeth with customised prosthetic crowns.

Methods: A six-year-old patient presented to our clinic with an extensive carious process affecting tooth 8.4. Read More

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September 2021

Knowledge and attitudes towards oral and dental health among seventh and eighth grade students compared with their teeth examination.

Eur J Paediatr Dent 2021 Sep;22(3):199-203

Zeynep Kamil Maternity and Children´s Training and Research Hospital, Department of Pediatrics, Division of Neonatology, Istanbul, Turkey.

Aim: Oral and dental heath are important aspects of general health and impact the quality of life and well-being. In this study, we aimed to assess the level of knowledge and attitudes towards oral and dental health and to examine the relative effect of social-behavioural risk factors on caries and other teeth problems among seventh and eighth grade students.

Methods: Study Design: The study population consisted of all seventh and eighth graders who started the 2011 school year in Sarigol village of the Manisa city, Turkey (n = 377). Read More

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September 2021

Effectiveness of fissure sealants on initial caries lesions (ICDAS 1-3) of permanent molars: A 4-year follow-up.

Eur J Paediatr Dent 2021 Sep;22(3):180-188

Professor Emeritus, Department of Paediatric Dentistry, Dental School, National and Kapodistrian University of Athens, Greece.

Aim: The aim of the present prospective study was to evaluate the retention and effectiveness of two types of sealants (clear vs. opaque) on early pit and fissure occlusal non-cavitated ICDAS II #1-3, caries lesions of permanent posterior teeth of children.

Materials And Methods: Study Design: 6986 pit and fissure occlusal surfaces were randomly sealed with clear or opaque sealants out of which, 5828 sealants were placed on sound and 1158 on questionable surfaces, while 3508 were clear and 3478 opaque sealants. Read More

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September 2021

Neighbourhoods and oral health: Agent-based modelling of tooth decay.

Health Place 2021 Sep 17;71:102657. Epub 2021 Sep 17.

Unit of Oral Health, Dentistry and Society, School of Clinical Dentistry, University of Sheffield, S10 2TA, United Kingdom.

This research used proof of concept agent-based models to test various theoretical mechanisms by which neighbourhoods may influence tooth decay in adults. Theoretical pathways were constructed using existing literature and tested in two study areas in Sheffield, UK. The models found a pathway between shops and sugar consumption had the most influence on adult tooth decay scores, revealing that similar mechanisms influence this outcome in different populations. Read More

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September 2021

Survival and success of tooth-implant-supported and solely implant-supported double-crown-retained overdentures: a prospective study over a period of up to 11 years.

Clin Oral Implants Res 2021 Sep 20. Epub 2021 Sep 20.

Dental School, Department of Prosthodontics, University of Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.

Objectives: To investigate the long-term performance, over a period of up to 11 years, of tooth-implant-supported and solely implant-supported double-crown-retained overdentures (DCRDs) for complete restoration of the jaw.

Materials And Methods: Between 2002 and 2015, patients were consecutively enrolled in the study at Heidelberg University Hospital's Department of Prosthodontics. Scheduled and unscheduled visits were both documented on standardized forms. Read More

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September 2021

Tooth retention predicts good physical performance in older adults.

PLoS One 2021 20;16(9):e0255741. Epub 2021 Sep 20.

Department of Medicine DIMED, University of Padova, Padova, Italy.

Background: Oral health is closely related to both physical and psychological well-being, as it enables individuals to eat, speak, and socialize. The number of teeth is the most used indicator of oral health. Several reports document a relationship of dental status with a variety of indicators of general health but longitudinal studies employing standardized physical performance tests are infrequent in the scientific literature. Read More

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September 2021

Nitrate increases cisplatin chemosensitivity of oral squamous cell carcinoma via REDD1/AKT signaling pathway.

Sci China Life Sci 2021 Sep 17. Epub 2021 Sep 17.

Beijing Laboratory of Oral Health, Capital Medical University School of Stomatology, Beijing, 100050, China.

Although cisplatin is one of the chemotherapeutics most frequently used in oral squamous cell carcinoma (OSCC) treatment, it exerts multiple side effects and poor chemosensitivity. Nitrate reportedly demonstrates several beneficial biological functions, and synthesized nitrates enhance the therapeutic efficacy of chemotherapy. However, the role of inorganic nitrate in cisplatin chemotherapy remains unclear. Read More

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September 2021

Rare clear cell odontogenic carcinoma associated with impacted tooth in a young patient: case report and literature review.

Oral Maxillofac Surg 2021 Sep 20. Epub 2021 Sep 20.

Departament of Dental Clinic, Federal University of Ceara, Fortaleza, Ceará, Brazil.

Clear cell odontogenic carcinoma (CCOC) is a rare malignant odontogenic tumor. It is characterized by showing, on histopathological examination, clusters of vacuolated and clear tumor cells with epithelial differentiation surrounded by fibrocollagenous stroma and fibroblasts. The present study presents a rare clinical case of mandibular CCOC associated with an impacted tooth in a 26-year-old woman surgically treated with mandibulectomy and reconstruction with iliac crest bone graft. Read More

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September 2021

Possibilities and limits of a student-led, near-peer mentoring initiative for first-year dental students.

J Dent Educ 2021 Sep 20. Epub 2021 Sep 20.

Faculty of Medicine and Health, Sydney School of Dentistry, The University of Sydney, Sydney, New South Wales, Australia.

Purpose/objectives: Dental students face many challenges throughout their education. Peer mentoring programs can support students and help manage pressures associated with dental school, although few studies have researched student-led peer mentoring. The aim of this study was to explore the possibilities and limits of student-led, near-peer mentoring in a dental program. Read More

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September 2021

Effect of training on time efficiency and marginal adaptation of computer-aided design/computer-aided manufacturing crowns among dental students.

Eur J Dent Educ 2021 Sep 19. Epub 2021 Sep 19.

Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.

Introduction: The computer-aided design/computer-aided manufacturing (CAD/CAM) technology has revolutionised dentistry at present. An operator's skills can affect the overall clinical duration and marginal accuracy of the prosthesis fabricated through this workflow. The aim of this study was to assess the effect of CAD/CAM hands-on training compared with that of a self-instructional video on the performance of dental students in digital impression and fabrication of a CAD/CAM crown. Read More

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September 2021

Dental Trauma in Children with Autistic Disorder: A Retrospective Study.

Biomed Res Int 2021 8;2021:3125251. Epub 2021 Sep 8.

Complex Operative Unit of Stomatological Surgery in Developmental Age, University of Campania Luigi Vanvitelli, Naples, Italy.

Background: The oral health care of autistic children is elaborated; they often fail to define dental problems, and a family-centered approach can be useful to improve and intercept these disorders.

Aim: To assess the oral status of autistic children, comparing it with no autistic patients.

Materials And Methods: A retrospective study analyzed the oral health status of 70 children, 35 with autism and 35 without the disorder. Read More

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September 2021

Dental management of a patient with Moebius syndrome: A case report.

World J Clin Cases 2021 Aug;9(24):7269-7278

Department of Oral Medicine, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, Zhejiang Province, China.

Background: Moebius syndrome (MBS) is a nonprogressive and rare congenital neuromuscular disorder involving the facial nerve and abductor nerve; it mainly manifests as facial paralysis and eye strabismus paralytic symptoms. Tissues in the oral cavity are also compromised, characterized by microstomia, micrognathia, tongue malformation, cleft lip, high arched palate or cleft palate, bifid uvula, and dental malocclusion. Therefore, dentistry plays a fundamental and crucial role in caring for these individuals. Read More

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