Case Report: An Extreme Case of Alveolar Bone Resorption in an Edentulous Mandible (original) (raw)
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IP innovative publication pvt. ltd , 2019
Bone resorption in posterior mandibular region creates a challenge in placement of dental implants and prosthetic rehabilitation due to presence of inferior alveolar nerve (IAN). Several alternatives treatment modalities are suggested: the use of short implants, cortical implants, guided bone regeneration, appositional bone grafting (both autogenous and allograft), distraction osteogenesis, inclined implants tangential to mandibular canal, and the lateralization of the inferior alveolar nerve. In this paper, we will present IAN repositioning cases and simultaneous implant placement and asses the success of implants, severity of nuerosensory disturbances and its impact on present day implant dentistry.
Teeth are extracted for a variety of reasons, including trauma, pathology, and infection. Tooth loss has a direct effect on the quality of life of an individual, as it alters the capacity to speak, masticate, and socialize. After extraction of a tooth, a series of biological events takes place that results in substantial anatomical changes to the remaining bony architecture. Investigators have demonstrated that post-extraction loss of bone volume is an irreversible process that has a predictable order, and results in horizontal as well as vertical deficits. Weijden et al., reported that the buccal aspect of bone resorbs first, more so in width than height, with mandibular bone resorption occurring before that of maxillary bone. Disuse atrophy, which is one factor implicated in the resorption of the alveolar ridge, poses a significant problem for tooth replacement, specifically when implant therapy is planned [3]. As a result, the functional and esthetic rehabilitation of the edentulous area may be compromised.
International Journal of Implant Dentistry, 2021
Background The purpose of this study was to analyze medium-to-long-term implant success and survival rates, and lower lip sensory disturbance after placement of dental implants with simultaneous inferior alveolar nerve (IAN) repositioning. Methods Fifteen patients (3 men, 12 women) treated in two centers were included in this retrospective study. The ages of the participants ranged from 19 to 68. A total of 48 dental implants were placed in 23 posterior mandibular segments simultaneously with IAN transposition or lateralization. The residual bone above the IAN ranged from 0.5 to 7.0 mm. Crestal bone changes were measured using cone beam computed tomography (CBCT) images. Disturbance of the IAN was evaluated subjectively using a modified questionnaire. Results The healing process was uneventful in fourteen patients. In one patient, spontaneous fracture of the operated mandible occurred on tenth day after the surgery. The implant in the fracture line was removed at the time of open re...
The International Journal of Periodontics & Restorative Dentistry
Currently, there are several techniques being used in the posterior mandible to increase alveolar bone height and width. However, each of these has potential complications and limitations. The purpose of the current study was to present the surgical technique and restorative considerations for implant placement lateral to the inferior alveolar nerve (IAN) in cases of severely atrophic edentulous posterior mandibles. In the current study, 26 implants in 16 patients were successfully placed lateral to IAN and restored with splinted screw-retained prostheses, with a follow-up time after loading that ranged from 3 months to 6 years. Two patients reported complications: one had a temporary paresthesia that resolved 3 months after implant placement, and the second had minor paresthesia, which was reduced after implant removal but remained in a small area on the left corner of her lip.
Nerve transposition and implant placement in the atrophic posterior mandibular alveolar ridge
Journal of Oral and Maxillofacial Surgery, 1994
The results obtained with a modified surgical technique for transposition of the inferior alveolar nerve followed by immediate placement of endosseous implants in mandibles with moderate to severe atrophy are presented. Ten transpositions of the inferior alveolar nerve together with the installation of 21 implants were performed in six patients. The mean postoperative follow-up time was 23 months, with a range of 12 to 46 months. All implants with functioning pontics remained stable, with no mobility nor signs or symptoms of pain and infection during the follow-up period. Postoperative radiographic evaluation disclosed no pathologic bone loss around the implants. Neurosensory evaluation was performed using the two-point discrimination test. One patient with unilateral transposition had objective neurosensory dysfunction at 12 months postoperative, although all the nerve function were reported as normal by the patients. Strict patient selection criteria are necessary, with full awareness by the patient of the possibility of long-term or even permanent nerve paresthesia, when this procedure is contemplated.
A Case Report-Implant Placement in Resorbed Alveolus
Biomedical and Pharmacology Journal, 2015
Dental implants were initiated in 1922 by Branemark, who and associates described the relationship between titanium implant and bone which termed osteointegration, defined as the direct structural and functional connection between living bone and the surface of an implant 1 .This clinical review is to evaluate of the effectiveness of implants placed in severly atrophic mandible.