1/30. Dental blood supply in the segmentally resected mandible.There are approximately 30,000 new cases of oral and pharyngeal carcinoma treated in the united states each year. A large number of these patients go on to receive segmental resection of the mandible, and have natural teeth remaining on the surgical side. To the best of our knowledge, there has not been a thorough discussion of the blood supply to these remaining teeth. Radiographic evidence of periapical pathology in these teeth is unusual, despite the compromised vascular supply. The purpose of this article is to report a case and review the literature on blood supply to teeth after segmental mandibulectomy. Microscopic examination was conducted on the pulpal tissue of a premolar retained on the side of, and anterior to, a segmental mandibular resection. Although abnormal, the pulp tissue showed evidence of a vascular supply 4 yr after mandibular surgery. A literature review was performed, and a discussion is given to explain the continued vascularity of the dentition through collateral and retrograde circulation. Despite the compromised dental circulation on the surgical side, unless radiographic evidence of periapical pathology occurs, endodontic therapy or extraction is not necessary. Due to the compromised nature of the circulation however, these teeth may be more susceptible to caries or restorative dental procedures that may lead to pulpal necrosis.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
2/30. Fixed prosthodontics in skeletal Class III patients with partially edentulous jaws and age-related prognathism: the basal osseointegration procedure.Today, prognathism in the partially or completely edentulous jaw can be treated with endosteal implants and fixed prostheses. The preferred procedure uses basal osseointegration. If the distribution of available bone is favorable, the prosthodontic suprastructures can be loaded early, taking the various phases of bone regeneration into account. Invasive surgical interventions, specifically iliac crest transplants, are rarely indicated and can be avoided in most cases. patients are able to return to their everyday lives within a few days.- - - - - - - - - - ranking = 5.1936234000025keywords = jaw (Clic here for more details about this article) |
3/30. A clinical application of autotransplantation using furcation-involved root.BACKGROUND, AIMS: The present case report describes the clinical application of autotransplantation using furcation involved roots. METHOD: After initial therapy, root resection was performed upon the patient's molar teeth with furcation involvement in the mandible. 2 distal roots of the molar teeth were autotransplanted as abutments to replace missing premolar and molar teeth in the mandible. RESULTS: On re-examination, 1 year after the transplantation, these roots showed no signs of periodontal or technical complications. The results suggest the potential use of autotransplantation techniques using furcation involved roots in reconstructive therapy. This may be a new approach in periodontal therapy.- - - - - - - - - - ranking = 0.4keywords = mandible (Clic here for more details about this article) |
4/30. Occlusal reconstruction of a collapsed bite by orthodontic treatment, pre-prosthetic surgery and implant supported prostheses. A case report.The loss of mandibular molars can result in a 'collapsed bite' owing to tilting of teeth adjacent to the gap and overeruption of maxillary molar segments. The lost interarch and interdental space must be regained before prosthetic reconstruction. This case report documents the treatment of a patient by orthodontic, surgical and prosthetic means. The teeth were orthodontically aligned to meet predetermined surgical and prosthetic requirements. The surgical phase comprised a posterior segmental maxillary osteotomy and one-stage placement of three large-diameter implants in the mandible. Finally, the occlusion was restored with mandibular implant-supported prostheses.- - - - - - - - - - ranking = 0.2keywords = mandible (Clic here for more details about this article) |
5/30. Implant-retained removable prosthesis with ball attachments in partially edentulous maxilla.This clinical report presents a restorative option for the partially edentulous maxilla utilizing an implant-retained removable partial denture without retentive clasps. This approach required (1) fewer patient visits and laboratory procedures; (2) the use of minimal number of implants; (3) lower financial obligations; and (4) no sinus elevation surgery. The use of O-ring attachments provided excellent retention and stability. The detachable prosthesis over implants allows easier oral hygiene by the patient and provides superior esthetics and phonetics in cases involving advanced ridge resorption.- - - - - - - - - - ranking = 0.00026775999276043keywords = lower (Clic here for more details about this article) |
6/30. Enhanced periodontal response and esthetics of implant-supported bridge by the use of galvanoforming technique: case report.BACKGROUND: Galvanoforming restorations have been placed over the past 15 years successfully. They offer several advantages over alloy restorations, including enhanced response to the periodontal tissues, biocompatibility, and superior esthetics. PURPOSE: The purpose of this report is to show the use of the galvanoforming process in dental implant restorations to transfer the benefits of this technique. MATERIALS AND methods: Two standard Branemark fixtures were placed submerged in the lower mandible for the restoration of a three-unit bridge. The impression was taken at fixture level, and two cast individual telescope abutments were inserted. The galvanoforming restoration was seated conventionally without any screw retention. RESULTS: An implant-supported galvanoforming bridge is functioning successfully. The use of biocompatible materials does not compromise the stability of the restoration; instead, the effect on the periodontal tissues is excellent, resulting in less plaque accumulation and bleeding on probing. Microgaps were avoided by conventional seating on the individual telescope gold abutments, revealing superior occlusal esthetics. CONCLUSIONS: This case report demonstrates the practicability of the biocompatible galvanoforming procedure for implant-supported restorations enhancing periodontal response and esthetics.- - - - - - - - - - ranking = 0.20026775999276keywords = mandible, lower (Clic here for more details about this article) |
7/30. Prosthodontic treatment for patients with large mandibular defects; porous hydroxyapatite grafts.It is difficult for both prosthodontists and their patients with large marginal defects to achieve a satisfactory prosthodontic result, because retention, support, and stability of the prosthesis are limited and recovery of esthetics is unsatisfactory owing to large mandibular defects. alveolar ridge augmentation therapy is performed to compensate for such problems. We have experienced a good prognosis of prosthodontic treatment for over 10 years in two patients with large marginal defects of the partially edentulous mandible, who had undergone grafting of porous hydroxyapatite blocks to their bone defects. It has been reported that porous hydroxyapatite blocks are unsuitable for edentulous patients, because the mucosa covering the hydroxyapatite block is too thin and delicate to support dentures. We, therefore, designed the denture to prevent concentration of occlusal stress on the mucosa. In both of these two cases, we achieved recovery of occlusal function and esthetics by affixing denture to the large marginally resected defect augmented with a graft of porous hydroxyapatite block.- - - - - - - - - - ranking = 0.2keywords = mandible (Clic here for more details about this article) |
8/30. Management of an implant case that required retreatment: a case report.The presented case represents how the lack of a preoperative panoramic radiograph or any radiograph contributed to incorrect case planning, poor implant selection, and the careless surgical placement of an implant into or dangerously close to the lower left mental foramen, resulting in a paresthesia of 9 months duration. Two implants were surgically removed and the bone defects were grafted with a mixture of irradiated cancellous bone plus Biogran. One implant was sectioned and intentionally "put to sleep." The case was successfully completed with a lower bar overdenture supported by 4 screw implants placed in alternate sites, opposing a custom fabricated maxillary denture with a lingualized occlusal scheme.- - - - - - - - - - ranking = 0.00053551998552086keywords = lower (Clic here for more details about this article) |
9/30. Restoration of the atrophied posterior mandible with transverse alveolar maxillary/mandibular implants: technical note and case report.Restoration of the atrophied posterior mandibular alveolus has been a surgical challenge in the past. Many treatment options have been published, each with unique shortcomings. This study will review and compare these techniques to a new type of implant, the transverse alveolar maxillary/mandibular implant (TAMMI). Using modified Nobel Biocare Branemark System zygomatic implants that were shortened to 11.5, 13, 15, 18, 20, 22.5, or 25 mm, the authors reconstructed atrophied posterior mandibles. These TAMMIs were placed at a 45-degree angle, engaging both the crest of the ridge and the buccal cortex. Using TAMMIs, atrophied posterior mandibular alveoli as small as 9 mm have been successfully restored without complication to the inferior alveolar nerve.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
10/30. mandible and maxilla bone mineral density and threshold analysis studies by pQCT in two edentulous women receiving pamidronate.The mandible and maxilla of two edentulous women, treated during 25 weeks with oral pamidronate, were monitored by peripheral quantitative tomography (pQCT). Whole bone volumetric mineral density failed to show meaningful variations after treatment. However, an analysis of separated cortical and medullar areas disclosed focal bone loss at the right mandible cortex of patient #1 and at the left maxilla cortex of patient #2. These and other bone sub-regions were further studied by clustering the internal sites with a different degree of bone mineral density, resorting to the mineral threshold analysis provided by the system. Where bone loss was detected, it corresponded to increased loss of the most osteopenic sites, while medium and high-density portions tended to remain unchanged within the region. There were no significant variations in all other regions, or alternatively, minor losses at osteopenic sites were compensated by an increase at high-density portions. Hence, the pQCT system allowed monitoring volumetric bone mineral density at particular sites of interest, discriminating variations at portions with a dissimilar degree of bone volume. Further studies should confirm whether pamidronate exerts a protective effect on sub-regions with previous medium and high degrees of bone mineralization, as suggested by our present findings.- - - - - - - - - - ranking = 0.4keywords = mandible (Clic here for more details about this article) |
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