Bisphosphonates (BPs) are clinically used for the treatment of bone metabolic abnormalities because they are powerful inhibitors of bone resorption. Osteonecrosis of the jaw has been observed after tooth extraction in a considerable number of BP-treated cancer patients, but the reason for this is not known. We studied the effects of BP on extraction socket healing in rats that were pretreated with BP prior to tooth extraction. Male Wistar rats (approximately 5 weeks old) were divided into experimental (BP) and control groups. In both groups, maxillary right second molars were extracted under general anesthesia. BP group rats were injected with 50 microl (1.0 mg/kg) alendronate into the right buccal alveolar bone every 4 days for 14 days, starting 2 days before tooth extraction. Control group rats were injected with physiological saline instead of alendronate. Rats were euthanized 3, 7, 10 or 14 days after tooth extraction, and maxillary bones were collected. Bone morphometric analysis using microfocus X-ray CT images and calculation of bone-resorption parameters based on hematoxylin and eosin or TRAP-stained pathological sections of the molar region showed that new bone formation in the extraction socket was delayed in the BP group relative to the control group during the first 7 days after extraction. A subsequent increase in new bone formation showed that bone resorption in the BP rats was eventually inhibited. This delay in initial healing may explain the jaw osteonecrosis observed in some BP-treated cancer patients.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00774-009-0090-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Selective outcome reporting concerning antibiotics and third molar surgery.
Clin Oral Investig
January 2025
Department of Oral and Maxillofacial Surgery, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes, 2227 - Cidade Universitária, São Paulo, 05508-000, Brazil.
Objectives: This study evaluates the selective outcome reporting (SOR) in clinical trials on antibiotic use in third molar surgeries. It explores how SOR may bias results and affect systematic reviews, potentially leading to misinterpretations of intervention efficacy.
Materials And Methods: A search was conducted on "ClinicalTrials.
Electrical storm in a patient with Charcot-Marie-Tooth disease treated with radiofrequency ablation and subsequent serious complication of implantable cardioverter defibrillator implantation: a case report.
Eur Heart J Case Rep
January 2025
Department of Internal Medicine and Cardiology, Faculty of Medicine, University Hospital Ostrava, University of Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic.
Background: Charcot-Marie-Tooth is the most common inherited neuromuscular disorder. Rarely, it can be associated with heart failure and various arrhythmic disturbances. This case illustrates the challenges of making decisions to prevent sudden cardiac death in a patient with Charcot-Marie-Tooth disease.
View Article and Find Full Text PDFFibrous dysplasia in the alveolar crest of edentulous site and the curettage for future implant placement: a case report.
BMC Oral Health
January 2025
Department of Oral Implantology, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, 510182, China.
Background: Fibrous dysplasia (FD) is a self-limiting benign disease with slow progression in which the normal bone is replaced by dysplastic fibrous tissue. The craniofacial skeleton is one of the most commonly affected areas, and it can create unique challenges in dental implant therapy. This case aims to report an unusual presentation of FD localized in the alveolar crest bone of the edentulous site, causing special obstacles to implant placement, and provide a diagnostic and treatment process that may be referenced.
View Article and Find Full Text PDFPredictive risk factors for adverse events during tooth extraction among elderly patients with cardiovascular diseases.
Ann Med
December 2025
Department of Geriatrics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Background: Tooth extraction is a risk factor for cardiovascular events, particularly in elderly patients. However, no clinical tool has been developed to date to predict the risk of adverse events (AEs) during tooth extraction.
Materials And Methods: We prospectively enrolled 774 elderly patients (aged ≥ 60 years) with cardiovascular disease (CVD) who were scheduled to undergo tooth extraction at the dental surgery department of Shanghai Ninth People's Hospital from January 2021 to July 2022.
External Apical Root Resorption in Endodontically Treated and Vital Teeth after Orthodontic Treatment: A Retrospective Study.
Turk J Orthod
December 2024
Akdeniz University Faculty of Dentistry, Department of Endodontics, Antalya, Turkey.
Objective: This retrospective study aimed to assess the presence and amount of external apical root resorption (EARR) in endodontically treated teeth (ETT) and contralateral teeth with vital pulp (VPT) following orthodontic treatment.
Methods: The study sample included panoramic radiographs of 503 patients (314 females and 189 males; 16.29 years±3.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!