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Sympathetic Nerve Activity During Tooth Extraction in Women Is Related to Dental Anxiety Immediately After Surgery.

J Oral Maxillofac Surg 2021 Jun 18. Epub 2021 Jun 18.

Professor, Department of Dental Anesthesiology, Field of Oral Maxillofacial Rehabilitation, Developmental Therapeutics Course, Graduate School of Medical and Dental Sciences.

Purpose: This study assessed the relationship between changes in autonomic nervous system activity during impacted mandibular third molar extraction and a patient's postoperative psychological status, with the overarching aim of informing the development of interventions to reduce dental phobia and anxiety. We hypothesized that changes in autonomic nervous system activity during tooth extraction are related to postoperative psychology.

Methods: In our prospective cohort study, heart rate variability, heart rate (HR), and systolic blood pressure (SBP) were recorded during impacted mandibular third molar extraction. Read More

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Dental status and prosthetic treatment needs among adult refugees in Germany.

Quintessence Int 2021 Jul 16;0(0). Epub 2021 Jul 16.

Objective: Due to the current global situation of refugees, Europe has experienced increased migration from African, Middle Eastern, and Eastern European countries. The objective of this study was to explore oral health, especially prosthetic status and treatment needs, in adult refugees, and to compare these findings with German cohorts.

Method And Materials: This representative, multicenter, cross-sectional survey on oral health and treatment needs among refugees was carried out in 10 registration centers for asylum seekers aged 18 to 75 years across Germany in 2016 to 2017. Read More

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Evaluation of the distance between the central teeth after frenectomy: a randomized clinical study.

Eur Oral Res 2021 May;55(2):99-103

Department of Periodontology, Faculty of Dentistry, Adıyaman University, Adıyaman,Turkey.

Purpose: The present study aimed to evaluate the periodontal status and the distance between the teeth one year after frenectomy in patients with abnormal frenums in the maxillary and mandibular midline.

Materials And Methods: This study included 50 patients (24 men and 26 women) between the ages of 13 and 53 who have frenum-induced diastemas between the incisors. The abnormal frenums were removed via conventional frenectomy. Read More

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Evaluation of the Effect of Surgical Extraction of an Impacted Mandibular Third Molar on the Periodontal Status of the Second Molar-Prospective Study.

J Clin Med 2021 Jun 16;10(12). Epub 2021 Jun 16.

Department of Oral Surgery, Pomeranian Medical University in Szczecin, 72 Powstańców Wlkp. St., 70-111 Szczecin, Poland.

Dental injury to the second molar (SM) caused by the surgical extraction of the impacted third molar tends to be underestimated. The necessity of assessment of the impact of the removal of the wisdom tooth in the mandible on the second molar arose. The study group ( = 60) was the one with the second molar on the surgical side, and the control group ( = 60) was the one with the tooth on the opposite side of the alveolar arch. Read More

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Oral Health Related Quality of Life and Prosthetic Status among Institutionalized Elderly from the Bucharest Area: A Pilot Study.

Int J Environ Res Public Health 2021 06 21;18(12). Epub 2021 Jun 21.

Department of Endodontics, Faculty of Dental Medicine, "Carol Davila" University of Medicine and Pharmacy, 17-21 Calea Plevnei Street, Sector 5, 010221 Bucharest, Romania.

The aim of the study was to assess the oral health related quality of life (OHRQoL) of elderly in care homes, one of Romania's most vulnerable social categories, to correlate it to sociodemographic, oral health parameters, and prosthodontic status. Therefore, a cross-sectional study was performed on 58 geriatrics divided into 3 age groups, who were clinically examined and answered the oral health impact profile (OHIP-14) questionnaire. Very high rates of complete edentulism in the oldest-old subgroup (bimaxillary in 64. Read More

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Third molar impaction in different facial types and mandibular length: A cross-sectional study.

Natl J Maxillofac Surg 2021 Jan-Apr;12(1):83-87. Epub 2021 Mar 16.

Department of Oral and Maxillofacial Surgery, Government Dental College, Thiruvananthapuram, Kerala, India.

Background: The etiology of mandibular third molar impaction is proposed to be mainly due to inadequate space between the distal of the second mandibular molar and the anterior border of the ramus of the mandible. This study was aimed to assess whether an association exists between different facial types and mandibular length to impaction of mandibular third molars.

Materials And Methods: The study consisted of 170 patients who were assessed for facial type clinically based on facial index and mandibular length radiographically on lateral cephalogram. Read More

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Mandibular Distraction Osteogenesis for Tongue-Based Airway Obstruction Without Micrognathia.

Ann Plast Surg 2021 Jun 25. Epub 2021 Jun 25.

From the Division of Plastic and Reconstructive Surgery Division of Pulmonary and Sleep Medicine Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, PA.

Purpose: Mandibular distraction osteogenesis (MDO) effectively treats tongue-based airway obstruction (TBAO) in micrognathic patients with Robin Sequence. Mandibular distraction osteogenesis may also address TBAO in certain nonmicrognathic patients who have severe obstructive apnea, although there is no current literature to guide MDO use in these atypical patients. This study describes outcomes of MDO in a series of patients with TBAO without micrognathia. Read More

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Smiling, Yawning, Jaw Functional Limitations and Oral Behaviors With Respect to General Health Status in Patients With Temporomandibular Disorder-Myofascial Pain With Referral.

Front Neurol 2021 24;12:646293. Epub 2021 May 24.

Department of Dental Techniques, Medical University of Bialystok, Białystok, Poland.

The temporomandibular joint is the one of the most important joints in the human body. It enables numerous orofacial functions such as mastication, swallowing, breathing, speech, emotional communication, and facial expressions. The aim of the study was to evaluate the prevalence of jaw functional limitations and oral behaviors with respect to general health status in patients with temporomandibular joint disorders-myofascial pain with referral. Read More

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Probiotics ameliorate alveolar bone loss by regulating gut microbiota.

Cell Prolif 2021 Jul 7;54(7):e13075. Epub 2021 Jun 7.

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.

Objectives: Oestrogen deficiency is an aetiological factor of postmenopausal osteoporosis (PMO), which not only decreases bone density in vertebrae and long bone but also aggravates inflammatory alveolar bone loss. Recent evidence has suggested the critical role of gut microbiota in osteoimmunology and its influence on bone metabolisms. The present study aimed to evaluate the therapeutic effects of probiotics on alveolar bone loss under oestrogen-deficient condition. Read More

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Burkitt lymphoma of the head and neck: An international collaborative study.

J Oral Pathol Med 2021 Jul 28;50(6):572-586. Epub 2021 Jun 28.

Oral Diagnosis Department, Semiology and Oral Pathology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.

Background: Burkitt lymphoma (BL) is an aggressive B-cell lymphoma with three variants (endemic, sporadic, and immunodeficiency-associated), presenting with specific epidemiological and clinical features. Burkitt lymphoma affects the head and neck region (BLHN) in approximately 10% of cases. The aim of this study was to undertake a comparative analysis of the clinicopathologic and immunohistochemical (IHC) features of BLHN diagnosed in patients from Africa, Guatemala, and Brazil. Read More

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Plasmacytoma and plasma cell myeloma affecting the jaws: A multi-institutional collaborative study.

J Oral Pathol Med 2021 Jul 20;50(6):613-621. Epub 2021 Jun 20.

Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.

Background: Plasma cell neoplasms are characterized by the proliferation of a single clone of plasma cells with production of a monoclonal immunoglobulin. They can manifest as a single lesion (plasmacytoma) or as multiple lesions (multiple myeloma).

Methods: Paraffin-embedded tissue blocks of patients microscopically diagnosed with plasma cell neoplasms in the jaws were retrieved from five pathology files. Read More

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Factors Affecting Future Caries Occurrence Among Preschoolers in Northern Guangdong: A Longitudinal Study.

Clin Epidemiol 2021 25;13:345-355. Epub 2021 May 25.

Stomatological Hospital, Southern Medical University, Guangzhou, People's Republic of China.

Purpose: This study aimed to investigate the new development of caries among preschoolers in northern Guangdong and to assess caries-related factors to distinguish groups with different caries risk levels.

Methods: Baseline data were recorded for participants from September to November 2019, and participants were reexamined from September to November 2020. A longitudinal observation of 11,973 preschoolers was conducted. Read More

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Recurrent mandibular fractures: a retrospective study over 17 years on aetiology, demographics, fracture patterns, and management.

Int J Oral Maxillofac Surg 2021 May 29. Epub 2021 May 29.

Department of Oral and Maxillofacial Surgery, Royal Darwin Hospital, Tiwi, Northern Territory, Australia.

Recurrent fractures of the mandible are rare, however in Darwin, Australia, their occurrence is relatively frequent. This retrospective study identified 127 patients with 148 recurrent mandibular fractures treated at Royal Darwin Hospital between 2000 and 2017. Age, sex, ethnicity, marital status, aetiology, risk factors, anatomical location of the fractures, fracture patterns, and management of the fractures were analysed. Read More

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The Relationship of Orofacial Pain and Dental Health Status and Oral Health Behaviours in Facial Burn Patients.

Pain Res Manag 2021 8;2021:5512755. Epub 2021 May 8.

School of Dentistry, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan.

This study aims to examine the association of orofacial pain and oral health status and oral health behaviours in facial burn patients. The participants in this cross-sectional study were randomly recruited from the Burn Care Center, Institute of Medical Sciences, Islamabad, Pakistan. An intraoral evaluation was carried out to record the DMFT and OHI-S. Read More

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Factors associated with alveolar bone depth mesial to the mandibular third molars after orthodontic protraction.

Am J Orthod Dentofacial Orthop 2021 May 26. Epub 2021 May 26.

Department of Orthodontics, Stomatology Hospital, Guangxi Medical University, Nanning, Guangxi, China. Electronic address:

Introduction: The objective of this research was to study the factors associated with the alveolar bone depth mesial to the mandibular third molars (M8) after the mandibular second (M7) and third molars were protracted into the space of the mandibular first molars (M6), which were newly extracted for orthodontic treatment or extracted more than 1 year before treatment.

Methods: This retrospective study included 57 adult patients (mean age 23.40 ± 4. Read More

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Double-layer technique using an ADM and CAF to treat a mandibular incisor with a Cairo RT2 defect: 8.5 year results.

Douglas H Mahn

Clin Adv Periodontics 2021 May 29. Epub 2021 May 29.

10610-B Crestwood Drive, Manassas, Virginia, 20109, USA.

Introduction: The purpose of this case report is to document the 8.5 years result of treatment of a mandibular incisor having a buccal Cairo Recession Type 2 (RT2) gingival recession defect (GRD) using a double-layer technique using an acellular dermal matrix (ADM) with a coronally advanced flap (CAF). To the author's knowledge, no long-term results of this treatment modality in the mandibular incisor area have been reported. Read More

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Comparison of lag screws and double Y-shaped miniplates in the fixation of anterior mandibular fractures.

Lydia Melek

World J Methodol 2021 May 20;11(3):88-94. Epub 2021 May 20.

Department of Oral and Maxillofacial Surgery, Alexandria University, Alexandria 21411, Egypt.

Background: Mandibular fractures constitute about 80.79% of maxillofacial injuries in Alexandria University, either as isolated mandibular fractures or as a part of panfacial fractures. The combination of symphyseal and parasymphyseal fractures represent 47. Read More

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[Age-related and post-extraction atrophy of the jaws and modern possibilities for restoring the masticatory apparatus in the elderly people.]

Adv Gerontol 2021 ;34(1):134-143

Medical university «REAVIZ», 227 Chapaevskaya str., Samara 443001, Russian Federation.

The data of clinical examination of 3 329 people (1 760 men and 1 569 women) living in various regions of the Russian Federation (St. Petersburg and Leningrad region, Moscow and Moscow region, Krasnodar Territory) are presented. The aim of the investigation was to study the frequency of tooth loss and clinical manifestations of atrophy of the alveolar processes (parts) of the jaws in patients of older age groups to assess the possibility of dental rehabilitation using orthopedic structures on dental implants. Read More

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Association Between Tobacco Smoking, Dental Status and Self-perceived Oral Health in Elderly Adults in Colombia.

J Cross Cult Gerontol 2021 Jun 15;36(2):187-200. Epub 2021 May 15.

Facultad de Odontología, Universidad de Antioquia, Calle 70 # 52-21, Medellín, Colombia.

Tobacco smoking is responsible for several health problems, including mouth diseases. The aim of the present study was to establish the association between smoking and dental status and self-perceived oral health in a large group of elderly Colombian adults. Analysis of 18,937 survey records of participants aged ≥ 60 years old was conducted. Read More

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Ultrasonic vibration and thermo-hydrodynamic technique for filling root canals: Technical overview and a case series.

Yong-Sik Cho

Int Endod J 2021 May 13. Epub 2021 May 13.

Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul, Korea.

Aim: To present a novel root canal filling technique: Ultrasonic Vibration & Thermo-Hydrodynamic Obturation (VibraTHO), and its rationale with a series of cases.

Summary: The VibraTHO technique was used to fill the root canals of three clinically challenging cases: A C-shaped mandibular molar with complex anatomy, a C-shaped mandibular molar with an infected root canal system and a periapical lesion that required retreatment, and apically bifurcating mesiobuccal canals with a common orifice in a maxillary second molar. The cases were followed up for 15, 7 and 37 months, respectively. Read More

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Periodontal status in long-term orthodontic retention patients up to 10 years after treatment - a cross-sectional study.

Acta Odontol Scand 2021 May 10:1-7. Epub 2021 May 10.

Section of Orthodontics, Institute of Clinical Dentistry, University of Oslo, Oslo, Norway.

Objective: To assess periodontal status in long-term orthodontic retention patients and investigate possible risk indicators.

Materials And Methods: Plaque index (PI), gingival index (GI), probing pocket depth (PPD), gingival recessions (GR) and calculus were recorded in 211 patients with or without fixed retainers.

Results: Periodontal parameters were within the limits of clinically healthy periodontium. Read More

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Normal Tissue Complication Probability (NTCP) Prediction Model for Osteoradionecrosis of the Mandible in Patients With Head and Neck Cancer After Radiation Therapy: Large-Scale Observational Cohort.

Int J Radiat Oncol Biol Phys 2021 Jun 10. Epub 2021 Jun 10.

Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.

Purpose: Osteoradionecrosis (ORN) of the mandible represents a severe, debilitating complication of radiation therapy (RT) for head and neck cancer (HNC). At present, no normal tissue complication probability (NTCP) models for risk of ORN exist. The aim of this study was to develop a multivariable clinical/dose-based NTCP model for the prediction of ORN any grade (ORN) and grade IV (ORN) after RT (±chemotherapy) in patients with HNC. Read More

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[Comprehensive Digital Workflow and Computer-Assisted Implant Surgery in a Patient with Reduced Crest Width. Case Report of a Split-Mouth Approach].

Swiss Dent J 2021 05;131(5):437-441

Klinik für Rekonstruktive Zahnmedizin und Gerodontologie, zmk Bern, Universität Bern.

Modern treatment protocols in implant dentistry focus on lower morbidity and patient-centered outcomes, in addition to commonly applied treatment success criteria. Prosthetically-driven digital planning followed by static computer-assisted implant surgery (sCAIS) may minimize the need for bone augmentation by ideally utilizing the residual crest and thereby improve patient satisfaction. A healthy 37-year-old female suffered from agenesis of both second mandibular premolars and presented wide single-tooth gaps on both sides of the mandible with a moderate (left) and pronounced (right) horizontal bone deficiency. Read More

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One-year performance of posterior narrow diameter implants in hyperglycemic and normo-glycemic patients-a pilot study.

Clin Oral Investig 2021 May 3. Epub 2021 May 3.

Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen Str. 45, 58455, Witten, Germany.

Objectives: The aim of the study was to compare the performance of narrow diameter implants in patients with uncontrolled diabetes mellitus type 2 (T2DM) and normo-glycemic individuals during the first 12 months after implant loading.

Material And Methods: In 16 T2DM patients with HbA1C > 6.5% (test group) and 16 normo-glycemic patients (HbA1C < 6. Read More

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Buccal corticotomy using piezosurgery as a surgical approach for removal of deeply impacted mandibular teeth: An alternative procedure to avoid pitfalls associated with the conventional technique.

Paolo Scolozzi

J Stomatol Oral Maxillofac Surg 2021 Apr 27. Epub 2021 Apr 27.

Head, Division of Oral and Maxillofacial Surgery, Department of Surgery, University of Geneva & University Hospitals of Geneva, Geneva, Switzerland. Electronic address:

Purpose: To describe and evaluate the use of buccal corticotomy (BC) using a piezosurgical approach for the removal of deeply impacted mandibular teeth.

Patients And Methods: The charts of all patients who underwent BC for the removal of impacted mandibular teeth between 2011 and 2019 at the University Hospital of Geneva were reviewed. The primary outcome variables were (1) the indication for the removal of impacted mandibular teeth by BC, (2) complications. Read More

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Psychologic Status and Influence of Surgery Techniques on Acute Nonneuropathic Pain After Dental Implant Surgery: Systematic Review and Meta-analyses.

Int J Oral Maxillofac Implants 2021 Mar-Apr;36(2):248-269

Purpose: Dental implant placement is often followed by acute pain, which is one of the most important patient-centered matters of treatment. However, this pain is often not adequately appreciated by clinicians, and knowledge about risk factors associated with acute pain is scant. An understanding of these factors is important to help clinicians deliver efficient pain control advice based on individual demand. Read More

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[Evaluation of the preliminary clinical effect of flap-raising combined with cortical-perforation technique in tooth extraction cases of patients with potential risk of medication-related osteonecrosis of the jaw].

Zhonghua Kou Qiang Yi Xue Za Zhi 2021 May 9;56(5):452-457. Epub 2021 May 9.

Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.

To evaluate the preliminary clinical effect of flap-raising and cortical-perforation based extraction method in patients with potential risk of medication-related osteonecrosis of the jaw (MRONJ). Eighteen patients, who needed teeth extraction in the Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology from February 2016 to November 2020, with a history of using anti-resorption/anti-angiogenesis medication were included in this retrospective study. According to the characteristics of the patient's medication history, patients were stratified into three categories, low-dose anti-resorption drug group, high-dose anti-resorption drug group, and high-dose anti-resorption combined with anti-angiogenesis targeted drug group. Read More

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The genera emAgathocles/em and emSurenus/em (Hemiptera: Heteroptera: Pentatomidae): tribal reassessment, redescription, new synonyms, and description of two new species.

S Salini Petr Kment

Zootaxa 2021 Apr 14;4958(1):zootaxa.4958.1.31. Epub 2021 Apr 14.

National Bureau of Agricultural Insect Resources, Bangalore, 560024, India.

The genus Surenus Distant, 1901 (Hemiptera: Heteroptera: Pentatomoidea: Pentatomidae: Pentatominae: Halyini) is revisited and found to be a junior subjective synonym of the genus Agathocles Stål, 1876 (currently Pentatominae: Rolstoniellini). The genus Agathocles and its type species, Agathocles limbatus Stål, 1876, are redescribed. Lectotype of Surenus normalis Distant, 1901 (= Agathocles normalis (Distant, 1901) comb. Read More

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Two new annual fishes (Cyprinodontiformes: Rivulidae) unexpectedly discovered in the highlands of southern Brazil.

Zootaxa 2021 Mar 26;4949(3):zootaxa.4949.3.4. Epub 2021 Mar 26.

Universidade do Vale do Rio dos Sinos (UNISINOS). Laboratório de Ecologia e Conservação de Ecossistemas Aquáticos (LECEA), Programa de Pós-Graduação em Biologia-Diversidade e Manejo da Vida Silvestre. Av. Unisinos, 950, Bairro Cristo Rei, CEP 93022-000, São Leopoldo, Rio Grande do Sul, Brazil. Instituto Pró-Pampa (IPPampa). Rua Uruguay, 1242. Bairro Centro, CEP 96010-630, Pelotas, Rio Grande do Sul, Brazil. 3Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS). Laboratório de Fisiologia da Conservação, Programa de Pós-Graduação em Ecologia e Evolução da Biodiversidade. Avenida Ipiranga, 6681. Bairro Partenon, CEP 90619-900, Porto Alegre, Rio Grande do Sul, Brazil..

Two new species of Austrolebias are described based on specimens collected from temporary pools located in natural grassland landscape within the Araucaria Forest domain at exceptionally high altitudes (~1000 meters a.s.l. Read More

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