Objectives: Extraction of a tooth leads to a series of healing events that are intimately associated with dimensional changes in the alveolar ridge that typically result in a net volume loss. Previous studies have evaluated the extent and pattern of those resorptive changes, however it remains challenging to predict the degree of change that will occur, as numerous local and systemic factors ma...

     Osteosarcoma (OS) is a malignant tumor that induces formation of osteoid or immature bone and rarely occurs in maxilla. Maxillofacial OSs are reported to occur in the third to fifth decades that is 1-2 decades later than the mean age for OS of long bones. The present case is a 62-year-old man with facial asymmetry and pain in his left upper jaw. Intraoral examination showed a bony hard, te...

PURPOSE The purpose of this article was to evaluate the suitability of deep-frozen allograft for ridge augmentation procedures in severely atrophic maxillae and to evaluate the clinical success of dental implants inserted after grafting and before prosthetic rehabilitation. PATIENTS AND METHODS This study included 13 patients (3 men and 10 women) aged 36 to 65 years. All the patients selected...

Objective: to investigate the predictive factors of failure in bone grafts for alveolar ridge augmentation and implant surgery. Methods: we reviewed the charts of 166 patients operated between 1995 and 2014. A total of 248 grafting procedures were performed. We submitted the data to the binomial test at 5% significance. Results: grafts to gain width of the alveolar ridge (65.32%) were more freq...

BACKGROUND In view of the importance of neutral zone in complete denture construction, it was thought feasible to determine the relation between the centre of the alveolar ridge crest in relation to the neutral zone in a buccolingual direction which will help in positioning of the teeth in a region of minimum conflict so that the stability of the denture is enhanced. MATERIALS & METHODS The p...

BACKGROUND Alveolar ridge keratosis (ARK) is a distinct, benign clinicopathological entity, characterized by a hyperkeratotic plaque or patch that occurs on the alveolar edentulous ridge or on the retromolar trigone, considered to be caused by chronic frictional trauma. The aim of this retrospective study is to present the clinicopathological features of 23 consecutive cases of ARK. MATERIAL ...

補綴治療の目的には,歯 の喪失によって低下 した口腔 機能の回復がある。欠損部 と残存歯の状態,欠 損様式等 の種々の状況 を十分 に考慮 した うえで,架 橋義歯,可 撤 式義歯,イ ンプラン ト等により口腔機能の回復を行 う。 しかし,顎 堤が低位 あるいはまた狭小な場合は,補 綴治 療のみで口腔機能の回復 を行 うことが困難 なことも多 い。 このような症例においては,補 綴治療の前処置とし て,骨 移植やGBR法 等の外科的手法を用いて顎堤の増 量が行われている。現在,こ れらの手法によって顎堤 を 増量 させ ることは可能ではあるが,よ り効率が良 く,簡 便かつ確実な顎堤の増量法の開発が望まれている。 元来生体 には自己修復力がある。両生類のイモリにお いては,四 肢や顎を切断除去 して も完全に再生復元す る ことが知 られてお り,イ モリには強力な自己修復力があ る...

BACKGROUND Alveolar ridge preservation could be performed immediately following tooth extraction to limit dimensional changes of alveolar process due to bone resorption. The aim of this study was to compare the clinical and histologic outcomes of socket preservation using two different graft materials; deproteinized bovine bone mineral (DBBM) and demineralized freeze-dried bone allograft (DFDBA...

Magdalena Ridge Observatory (MRO) Interferometer is a ten telescope optical interferometer array being built on the Magdalena Mountains 20 miles west of Socorro, New Mexico. The interferometer is being designed by collaboration between New Mexico Institute of Mining and Technology and the University of Cambridge. The science mission and requirements have been finalized which has helped to begin...