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Alveolar resorption

Huseyin Burak Kutlu, Samir Goyushov, Bünyamin Calisan, Tolga F Tözüm
OBJECTIVE: Loss of teeth frequently results in compound horizontal and vertical alveolar bone defects. An appropriate bone structure is the key for implant placement and bony support of soft tissues. Advanced bone augmentation techniques are required for the reconstruction of these defects. This report will present a new bone block grafting technique with 12-month follow-up. METHOD: The seedling technique was used to augment the alveolar bone 3-dimensionally with autologous bone block and an osseointegrated implant in a 2-stage procedure...
March 13, 2018: Journal of Craniofacial Surgery
Mauro Cruz, Gustavo Cruz, Fernando Cruz, Rafael Morales-Vadillo, Silvia Cruz-Pierce
PURPOSE: To present a technique to rehabilitate atrophied alveolar ridges in the posterior maxilla and mandible using bone lateral to the maxillary sinus and to the inferior alveolar nerve and to present a retrospective study of the technique. MATERIALS AND METHODS: Severe resorption of the posterior region of the maxilla and mandible was treated following a conservative approach. Patients who presented this bone crest condition that impeded the placement of implants and had an anatomy that allowed the inferior alveolar nerve or the maxillary sinus to be approached laterally were treated...
March 2018: International Journal of Oral & Maxillofacial Implants
Takenobu Ishii, Montserrat Ruiz-Torruella, Atsushi Ikeda, Satoru Shindo, Alexandru Movila, Hani Mawardi, Abdullah Albassam, Rayyan A Kayal, Ayman A Al-Dharrab, Kenji Egashira, Wichaya Wisitrasameewong, Kenta Yamamoto, Abdulghani I Mira, Kenji Sueishi, Xiaozhe Han, Martin A Taubman, Takeshi Miyamoto, Toshihisa Kawai
Cell fusion-mediated formation of multinuclear osteoclasts (OCs) plays a key role in bone resorption. It is reported that 2 unique OC-specific fusogens [ i.e., OC-stimulatory transmembrane protein (OC-STAMP) and dendritic cell-specific transmembrane protein (DC-STAMP)], and permissive fusogen CD9, are involved in OC fusion. Contrast to DC-STAMP of which knockout (KO) mice show osteopetrotic phenotype, OC-STAMP-KO mice show no difference in systemic bone mineral density. Nonetheless, according to the ligature-induced periodontitis model, significantly lower level of bone resorption was found in OC-STAMP-KO mice compared to WT mice...
March 13, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
M Wolf, M Ao, M B Chavez, T N Kolli, V Thumbigere-Math, K Becker, E Y Chu, A Jäger, M J Somerman, B L Foster
Previous studies revealed that cementum formation is tightly regulated by inorganic pyrophosphate (PPi ), a mineralization inhibitor. Local PPi concentrations are determined by regulators, including ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1), which increases PPi concentrations by adenosine triphosphate hydrolysis. Orthodontic forces stimulate alveolar bone remodelling, leading to orthodontic tooth movement (OTM). To better understand how disturbed mineral metabolism and the resulting altered periodontal structures affect OTM, we employed Enpp1 mutant mice that feature reduced PPi and increased cervical cementum in a model of OTM induced by a stretched closed-coil spring ligated between the maxillary left first molar and maxillary incisors...
March 1, 2018: Journal of Dental Research
A Z Oz, S Ciger
Objective: The aim of the present study was to evaluate the changes of incisor root resorption associated with impacted maxillary canines and health of periodontal tissues around maxillary canines erupted with orthodontic treatment. Materials and Methods: Twenty patients with a unilateral palatally impacted maxillary canine were included in the study. Cone-beam computed tomography images taken before and after orthodontic treatment were compared with the contralateral canines serving as control teeth...
March 2018: Nigerian Journal of Clinical Practice
Mohamed Moustafa Said, Takafumi Otomaru, Ayako Kanazaki, Haruka Fujita, Hisashi Taniguchi
This case history report describes the long-term prosthodontic treatment of a patient with gnathodiaphyseal dysplasia (GDD). The patient was initially diagnosed with osteomyelitis in the maxilla in 1986, followed by osteonecrosis spread throughout the mandible. GDD was genetically diagnosed in 2006. Despite the severe alveolar bone resorption, prosthodontic treatment improved the patient's satisfaction and ability to perform essential functions. Regular prosthesis adjustments and periodic follow-up should continue to avoid future complications...
March 2018: International Journal of Prosthodontics
Matteo Marzadori, Martina Stefanini, Matteo Sangiorgi, Ilham Mounssif, Carlo Monaco, Giovanni Zucchelli
Crown lengthening is one of the most common surgical procedures in periodontal practice. Its indications include subgingival caries, crown or root fractures, altered passive eruption, cervical root resorption and short clinical abutment, and its aim is to re-establish the biologic width in a more apical position. While the procedure in posterior areas of the dentition has been thoroughly investigated, crown lengthening performed for esthetic reasons in the anterior areas is still a matter of debate and an evidence-based technique is not available...
March 1, 2018: Periodontology 2000
P C Jia, G Yang, W J Hu, Y J Zhao, M Q Liu
OBJECTIVE: To explore the accuracy of periapical film in evaluating the infrabone root surface area of single-root teeth with different types of resorption of the alveolar bone. METHODS: In this study, the medical records and imaging data of patients in Department of Periodontology of Peking University Hospital of Stomatology from January 2014 to December 2016 were retrospectively analysed. The involved teeth were divided into two groups: horizontal bone loss group and vertical bone loss group...
February 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
S Matsuda, T Memida, N Mizuno, I Ogawa, K Ouhara, M Kajiya, T Fujita, E Sugiyama, H Kurihara
AIM: To report a case of reparative bone-like tissue formation in the tooth of a patient with systemic sclerosis. SUMMARY: A 58-year-old Japanese female patient with systemic sclerosis was referred because of tooth fracture. Cone beam computerized tomography (CBCT) revealed multiple root resorption and the unclear transition from alveolar bone to root profile. A sample from a fractured tooth was analysed histologically. Haematoxylin and eosin-stained sections revealed the irregular replacement of pulp and dentine by bone-like tissue...
February 26, 2018: International Endodontic Journal
Diego Moura Soares, Flávia Maria de Moraes Ramos-Perez, Samuel Silva de Araújo, Priscylla Gonçalves Correia Leite de Marcelos, Andrea Dos Anjos Pontual, Danyel Elias da Cruz Perez
OBJECTIVE: To investigate the effect of sildenafil citrate on the prevention and progression of experimental periodontitis (EP) in rats. MATERIALS AND METHODS: Thirty-six male Wistar rats were randomly assigned into 2 groups: Group 1 (preventive) and Group 2 (progression). In Group 1, the animals received daily doses of sildenafil (10 mg/Kg) or vehicle for 30 days, and EP was induced on the 15th day. In Group 2, the EP was induced on the first day, and the animals received daily doses of sildenafil (10 mg/Kg) or vehicle from the 15th day...
February 26, 2018: Oral Diseases
Y Du, W Zhou, Y Pan, Y Tang, L Wan, H Jiang
BACKGROUND: Older alveolar cleft patients (>12 years old) often have wide bone defect as well as teeth loss, resulting in poor osseous healing with conventional alveolar bone grafting (ABG). In this study, we investigated a surgical technique of block iliac bone grafting for the alveolar cleft reconstruction and evaluated the clinical and radiological outcomes of these cleft patients. MATERIAL AND METHODS: Fifteen patients were included in this study. All cases received preoperative cone bean computed tomography (CBCT) scans for the alveolar cleft evaluation...
February 24, 2018: Medicina Oral, Patología Oral y Cirugía Bucal
Yingdi Zhang, Zheng Ruan, Minhua Shen, Luanjun Tan, Weiqin Huang, Lei Wang, Yuanliang Huang
The aim of the present study was to evaluate the clinical efficacy of platelet-rich fibrin (PRF) in preserving the alveolar ridge following human tooth extraction. A total of 28 patients were divided into two groups: The experimental and control groups (n=14 each). Following tooth extraction, the experimental group was implanted with PRF membrane, whereas the control group was not. The gingival healing effect was assessed at 7 days, 1 and 3 months later. Cone-beam computed tomography was performed immediately and at 3 months following tooth extraction...
March 2018: Experimental and Therapeutic Medicine
Shweta Sharma, Rajat Sharma, Abdul Ahad, Narinder Dev Gupta, Surendra Kumar Mishra
Hemisection of a molar denotes removal or separation of a root along with its accompanying part of crown. It is a suitable treatment option when the caries, resorption, perforation, or periodontal damage is restricted to one root while the other root is relatively healthy. Hemisection of the affected tooth helps to retain the tooth structure, surrounding alveolar bone, and may also facilitate the placement of fixed prosthesis. This case report describes the hemisection as a successful treatment method to save a grossly carious mandibular first molar with periodontal and periapical involvement...
January 2018: Journal of Natural Science, Biology, and Medicine
Fouad Khoury, Romain Doliveux
The aim of this study was to evaluate a new minimally invasive surgical technique for the reconstruction of critical-size bony defect with local harvested bone core with simultaneous implant placement. In a prospective study, 186 consecutively treated patients were included and controlled clinically and radiologically for at least 5 years postoperative. Every patient presented a bony defect affecting the buccal, lingual, or palatal wall. In all cases, the alveolar crest was wide enough to allow implant placement inside the bony contours...
March 2018: International Journal of Periodontics & Restorative Dentistry
Pamela Uribe, Lena Larsson, Anna Westerlund, Maria Ransjö
Animal studies suggest that the dental follicle (DF) plays a major role in tooth eruption. However, the role of the DF during tooth impaction and related root resorptions in adjacent teeth is not clear. The hypothesis for the present study is that expression of regulatory factors involved in the bone remodelling process necessary for tooth eruption may differ between dental follicles from teeth with different clinical situations. We have analysed the gene expression profiles in the DF obtained from impacted canines, with (N = 3) or without (N = 5) signs of root resorption, and from control teeth (normal erupting teeth, mesiodens) (N = 3)...
February 12, 2018: Odontology
Yuanqing Huang, Ning Chen, Dengshun Miao
To investigate whether pyrroloquinoline quinine (PQQ) plays an important role in rescuing Bmi-1-/- mice induced developmental disorders of teeth and mandible by regulating oxidative stress. We fed Bmi-1-/- mice a diet supplemented with PQQ (BKO+PQQ), BKO mice with normal diet (BKO) and wild type mice with normal diet (WT) as controls. We compared the differences of dental, mandibular phenotype by means of X-ray photography, micro CT scanning and three-dimensional reconstruction, HE staining, histochemistry, immunoistohemistry, TUNEL staining, Western blot and Flow cytometry in three groups of animals...
2018: American Journal of Translational Research
Simone Cortellini, Ana B Castro, Andy Temmerman, Jeroen Vandessel, Nelson Pinto, Reinhilde Jacobs, Marc Quirynen
AIM: The objective of this proof-of-concept study was to investigate the effects of a new GBR technique with a tissue engineering approach. MATERIAL AND METHODS: This single cohort observational study evaluated the outcome of the L-PRF block for horizontal bone augmentation in the maxilla. The L-PRF block is prepared by mixing a particulated biomaterial with chopped L-PRF membranes at a 50:50 ratio and adding Liquid Fibrinogen to glue all together. Horizontal augmentation was assessed linearly and volumetrically immediately after surgery and 5-8 months later by matching consecutive CBCTs...
February 8, 2018: Journal of Clinical Periodontology
Zhen Tan, Jian Kang, Wenjia Liu, Hang Wang
BACKGROUND: To date only a few studies have been done on the use of the socket-shield technique for preserving the resorption of the buccal bone in aesthetically sensitive sites. Besides, there have been no further studies on the effect of the heights and thicknesses of the remaining root segments on buccal bone resorption when using this method. PURPOSE: The aim of this study was to evaluate the effect of different heights and thicknesses of the remaining root segments on bone resorption in the socket-shield technique...
February 8, 2018: Clinical Implant Dentistry and related Research
N Girish Kumar, Rupanzal Chaudhary, Ish Kumar, Srimathy S Arora, Nilesh Kumar, Hem Singh
AIM: The purpose of this study is to evaluate the efficacy of Platelet Rich Fibrin (PRF) as a socket plug with or without use of Plaster of Paris (POP) as bone substitute to preserve the alveolar ridge post-extraction. MATERIAL AND METHODS: A prospective randomised single blind controlled study, was conducted for 18 months from November 2014 to May 2016 on 48 patients requiring extraction. All teeth were extracted atraumatically using periotomes and luxators without raising mucoperiosteal flap...
February 6, 2018: Oral and Maxillofacial Surgery
Jeff H Bynum
Achieving successful long-term esthetic outcomes in implant dentistry requires that the height and width of the facial or buccal alveolar bone wall and, subsequently, the peri-implant tissues be maintained. Partial extraction therapy (PET) can be used to reduce the risk of facio-lingual collapse after tooth loss and improve the preservation of alveolar bone height and blood supply. This article demonstrates the use of PET for treatment of a hopeless tooth in the esthetic zone. After removal of the fractured maxillary central incisor, an implant was placed and restored with excellent esthetic, functional, and periodontal results...
February 2018: Compendium of Continuing Education in Dentistry
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