Treatment of atrophic maxilla with zygomatic implants in 29 consecutives patients.

Atrophic maxilla is a common condition in older population; some treatments are proposed with bone reconstruction or zygomatic implant. Long-term follow up show the efficiencies of zygomatic implant but limited data are associated to consecutive patient. The aim of this study was to evaluate retrospectively the zygomatic implants performed consecutively in 29 patients.

Bone repair is influenced by different particle sizes of anorganic bovine bone matrix: a histologic and radiographic study in vivo.

Purpose: The aim of this study was to analyze histologically and radiographically the influence of particle size of anorganic bovine bone matrix (ABBM) on bone repair.

Materials And Methods: Four calvarial defects of 8 mm each were prepared in 18 adult New Zealand rabbits. The defects were then filled with either particulate autogenous bone (control group) or ABBM of large, medium, and small size granules.

Use of resorbable screws for autogenous onlay block graft fixation: a histological analysis in rabbits.

The aim of the present in vivo study is to histologically evaluate and compare the use of resorbable screws based on poly(L-co-D,L lactide) 70:30 for fixation of autogenous bone grafts in rabbit tibiae. As control group, titanium (Ti-6Al-4V Grade V) screws were used. For this purpose, 15 white New Zealand male rabbits, aged 6 months and weighing between 3.

Prospective clinical assessment of pulp sensitivity after chin bone harvesting.

Proposal: Evaluate pulp vitality of mandibular teeth after chin bone harvesting.

Materials And Methods: Thirty patients underwent chin bone harvesting and accompanied for 12 months, being submitted to testing for pulp vitality with Endo Ice refrigerant spray to produce a local temperature of -50 °C. The statistical analysis was executed with McNemar test with P value < 0.

Surgical repositioning of osseointegrated malposed dental implant with segmental osteotomy.

After extensive research, the practice with dental implants has been used on a large scale. With the increase in its indications in various local conditions, more complications have been observed. Among these, one of the most frequent is the installation of the implants in a three-dimensional altered position, making the prosthesis and aesthetics more difficult to achieve.

Evaluation of patients' perceptions of alterations after chin bone graft harvesting.

Objective: To evaluate patients' perceptions of alterations occurring after chin bone harvesting.

Materials And Methods: Thirty patients were evaluated subjectively by visual analog scale-related sensitivity, facial aesthetics, eating, speaking, and lower lip movement, during 12 months. Objective analysis used the static light touch neurosensorial test.

Prospective clinical assessment of morbidity after chin bone harvest.

The aim of this prospective research was to assess soft tissue morbidity in the symphyseal region after bone graft harvesting. Thirty patients, with average age 45 years, underwent symphyseal bone graft harvesting followed up for a period of 12 months. Follow-up involved neurosensory testing of 2-point discrimination, static light touch, brush directional stroke, pinprick, and thermal discrimination to cold and hot; the statistical analysis was performed using McNemar test and Friedman test with P < 0.

Cephalometric evaluation of surgical mandibular advancement.

The treatment of Class II adult individuals with mandibular deficiency has been the combination of orthodontic treatment and orthognathic surgery. Therefore, a study was conducted in which cephalometric analysis was used to evaluate the influence of dentoalveolar decompensation in Class II patients submitted to orthodontic and surgical treatment for mandibular advancement, by bilateral osteotomy of the mandibular ramus. A sample of 15 leukoderma adult female patients were selected and three cephalometric radiographs of each patient, taken before the orthodontic treatment, before surgery and after at least 6 months postoperatively, were analyzed in a total of 45 roentgenograms.

Reconstruction of severely resorbed maxilla with biodegradable polylactide screws: case series.

Purpose: After the loss of natural teeth, bone changes in the jaws begin to take place immediately. Because the alveolar bone no longer responds to stresses placed in this area by teeth and periodontal ligaments, the bone begins to resorb. In such cases, alveolar bone reconstruction followed by implant-prosthetic treatment must be considered to reestablish esthetics and function.

Mineralized tissue formation associated with 2 different dental implant designs: histomorphometric analyses performed in dogs.

The clinical success of dental implants might be associated with such factors as installation technique, implant shape, size, material, and screw threads. Therefore, the aim of this study is to analyze mineralized tissue formation on the screw threads of conical and cylindrical dental implants. This study includes 7 beagle dogs that had the lower premolars extracted.

TMJ ankylosis after neonatal septic arthritis: literature review and two case reports.

Ankylosis of the temporomandibular joint (TMJ) can be a result of several causes such as trauma, degenerative changes, infection, and space-occupying lesion. When occurring during early childhood, it can result in severe functional disability and facial deformity. Septic arthritis is an uncommon disease associated with systemic and local factors being most commonly caused by Staphylococcus aureus, Neisseria gonorrhoeae, and Haemophilus influenzae.

Influence of diameter and length of implant on early dental implant failure.

Purpose: To relate diameter and length of implants with early implant failure.

Patients And Methods: Implants with a cylindrical design and surface treatment by removal of titanium via acidification from 3 different manufacturers were used in this study. Two surgical procedures for submerged implants were evaluated--the placement of the implants (first surgical phase) and the procedure for reopening (second surgical phase)--before the installation of the prosthetic system.

Histological and histomorphometric analyses of calcium phosphate cement in rabbit calvaria.

Purpose: To assess bone regeneration in critical sized defects in the rabbit calvarium, filled with the bone substitute calcium phosphate cement.

Material And Methods: Circular bone defects (8mm) were made in both parietal bones of 10 rabbits. One of the defects was filled with the calcium phosphate cement, and the other received autogenous bone harvested from the calvaria.

The influence of tobacco on early dental implant failure.

Purpose: The purpose of this study was to assess tobacco use as a risk factor for early implant failure.

Materials And Methods: To address the research aim, a retrospective study design was used, and a study sample was derived from among patients who had 1 or more implants inserted between July 1996 and July 2004. The main predictor variable was the frequency of tobacco use.

Inflammatory fibrous hyperplasia treated with a modified vestibuloplasty: a case report.

Aim: The purpose of this report is to present a case of surgical and prosthetic treatment of a woman with inflammatory fibrous hyperplasia (IFH) and her evaluation during a six month period.

Background: IFH is a benign pathology, prevalent in female patients, and principally associated with ill-fitting prosthetic devices in need of adjustment. It is common for patients to require surgical removal of the hyperplastic tissue and fabrication of a new prosthesis.

Oral manifestation of systemic lupus erythematosus: lupus nephritis--report of a case.

Systemic lupus erythematosus (SLE) is a disease of unknown origin that can affect organs and cause severe damage. Lupus is diagnosed through biopsies and laboratory examinations; however, certain clinical characteristics and the presence of lesions can help with early diagnosis and improve the disease prognosis. SLE patients generally receive immunosuppressants that may cause systemic implications---such as suture dehiscence, increased risk of infection, and delayed healing--that deserve specific attention during dental treatment.

Patient's perception of the events during and after osteogenic alveolar distraction.

Objective: The aim of the study was to evaluate the patient s perception of the events during and after an osteogenic alveolar distraction (OAD) procedure

Materials And Methods: A total of fifty-five (55) osteogenic alveolar distraction (OAD) procedures were performed in fifty (50) patients, who then were asked to answer ten (10) questions related to the treatment. Six (6) questions made reference to predefined values in a Visual Analogical Scale (VAS), three (3) questions could be answered by a predetermined answer, and only one (1) question had a free answer.

Results: In 76% of cases, the patient s description of the sensation felt during the surgery was good and bearable; 84% of the patients didn t feel pain after surgery.

Complications of intraoral donor site for bone grafting prior to implant placement.

Purpose: The purpose of this prospective study was to evaluate the morbidity and the major complications of intraoral donor sites for bone grafting prior to implant placement.

Materials: The records of 104 consecutive patients with indication for bone grafting prior to implant installation treated at Piracicaba Dental School by the Department of Oral and Maxillofacial Surgery, from June 2001 until June 2003, were reviewed.

Results: One hundred three surgical procedures were realized, in which 40% were harvested from mandibular symphysis, 28.

Clinical evaluation of association of bovine organic osseous matrix and bovine bone morphogenetic protein versus autogenous bone graft in sinus floor augmentation.

Purpose: The purpose of the present study is to evaluate clinically and radiographically the behavior of the association between bovine organic osseous matrix (BOM) and bovine bone morphogenetic protein (bBMP) versus autogenous bone graft in promoting bone healing in maxillary sinus lifting procedures.

Materials And Methods: Ten nonsmoking and systemically healthy patients who needed bilateral maxillary sinus grafting for the placement of osseointegrated implants were treated. In all patients, 1 side was selected as test (bBMP + BOM) and the other as control using autogenous particulated bone graft from mandibular ramus.

Radiographic evaluation of alveolar distraction osteogenesis: analysis of 60 cases.

Purpose: The aim of this study was to evaluate radiographically the effectiveness of alveolar distraction osteogenesis (ADO) technique for vertical reconstruction of atrophy alveolar ridges in partially edentulous patients.

Materials And Methods: A total of 60 vertical distraction osteogenesis procedures were performed in 55 patients. Two panoramic radiographies were performed in all patients, one the day before the beginning of distraction, and one after consolidation period, 12 weeks postoperatively.

Traumatic subcutaneous emphysema of the face associated with paranasal sinus fractures: a prospective study.

Purpose: The purpose of this report was to review and analyze the epidemiologic features of traumatic subcutaneous emphysema (TSE) originating from frontal, nasoethmoidal, and maxillary facial injuries with sinusal involvement in the emergency room setting.

Patients And Methods: All patients with a fracture involving the paranasal sinuses were evaluated with regard to TSE occurrence. Data analysis extended to gender, age, etiology, fracture sites, TSE location, sinus involvement, treatment, and complications from April 1999 to December 2003.

Clinical assessment of 40 patients subjected to alveolar distraction osteogenesis.

Alveolar bone distraction is a technique used to restore vertical defects in the edentulous alveolar ridge. The gradual growth of bone tissue has a predictable result, allowing the placement of an osseointegrated implant in an ideal position. In this study, the effectiveness of the alveolar distraction technique was verified, using an extraosseous device.

Analysis of the transforming growth factor-beta 1 gene promoter polymorphisms in early osseointegrated implant failure.

Transforming growth factor-beta 1 is a multifunctional cytokine involved in extracellular matrix deposition, reduction of inflammation, and promotion of wound healing. Single nucleotide polymorphisms in the promoter region of human transforming growth factor-beta 1 gene, C-509T and G-800A, have been shown to increase the transcriptional activity of this cytokine and have been associated with a variety of diseases. The objective of this study was to investigate the possible association between these single nucleotide polymorphisms and the early implant failure.

Incidence of dental trauma associated with facial trauma in Brazil: a 1-year evaluation.

Dental trauma occurs frequently in young people, and mostly occurs in conjunction with facial trauma. In the literature, there are still few reports relating dental trauma, facial trauma, and soft-tissue injuries. This research aimed to evaluate: (i) the overall incidence of dental trauma in 340 patients who presented with facial trauma over a 1-year-period, (ii) the epidemiology of these related diseases, and (iii) the most common dental trauma when a facial trauma was present.