1,721,011 research outputs found
Age-Related Oral and Systemic Disorders
Full text linkThe advancement of medicine has reduced the global mortality rate; the older adult population continues to grow and is expected to reach 1 in 6 people by 2050 [...
Minimally invasive fixed rehabilitation of a totally edentulous severely atrophic mandible with 4-mm ultrashort immediately loaded implants: A case report
No full textThis case report describes the minimally invasive full fixed rehabilitation of a totally edentulous severely atrophic mandible. The patient refused to undergo any other treatment, from the reconstructive surgery to the removable prosthesis, and asked for a fixed minimally invasive solution in the shortest possible time. Considering that the posterior mandibular bone was inadequate in height and that the interforaminal bone was only 4.3 to 5 mm in height, the patient received four 4-mm-ultrashort implants in the interforaminal area that were immediately loaded. Within all the limitations of this case report this procedure in this specific case appears successful through 2 years of loading
Clinical Classification of Bone Augmentation Procedure Failures in the Atrophic Anterior Maxillae: Esthetic Consequences and Treatment Options
Full text linkAlthough the number of complications and failures in bone augmentation procedures is still relatively high, these problems remain poorly documented. Moreover, the literature concerning reconstructive techniques and the treatment of their complications in the anterior areas rarely considers the final esthetic result. The aim of this paper is to propose a new classification of bone augmentation complications in the esthetic area, providing treatment guidelines useful for the management of these cases. Failures of bony regeneration procedures can be mainly divided into partial failures and complete failures. A partial failure can be solved with a corrective surgical intervention: this second surgery can have success or may not be able to provide the desired esthetic result. When the bone reconstructive procedure fails totally, a complete failure occurs and the whole procedure has to be repeated. This new intervention can have success but also this new reconstructive surgery can fail in the same way as the first, causing important damage and a compromise solution that will hardly be acceptable from an esthetic point of view. Bone augmentation techniques are not completely predictable and are not always able to guarantee the expected result, especially in the atrophic anterior maxilla. Complications and failures can often occur and this possibility must always be clearly explained to those patients with high esthetic demands and expectations
Multidisciplinary Approach to Fused Maxillary central Incisors: a Case Report
No full textIntroduction: The fusion of permanent teeth is a development anomaly of dental hard tissue. It may require a hard
multidisciplinary approach with orthodontics, endodontics, surgery and prosthetics to solve aesthetic and functional
problems.
Case presentation: A 20-year-old Caucasian man presented to our Department to solve a dental anomaly of his
upper central incisors. An oral investigation revealed the fusion of his maxillary central incisors and dyschromia of
right central incisor. Vitality pulp tests were negative for lateral upper incisors and left central incisor. Radiographic
examinations showed a fused tooth with two separate pulp chambers, two distinct roots and two separate root
canals. There were also periapical lesions of central incisors and right lateral incisor, so he underwent endodontic
treatment. Six months later, OPT examination revealed persistence of the periapical radiolucency, so endodontic
surgery was performed, which included exeresis of the lesion, an apicoectomy and retrograde obturation with a
reinforced zinc oxide-eugenol cement (SuperEBA) Complete healing of the lesion was obtained six months
postoperatively. Fused teeth crowns were separated and orthodontic appliances were put in place. When correct
teeth position was achieved (after nine months), the anterior teeth were prosthetically rehabilitated.
Conclusion: Many treatment options have been proposed in the literature to solve cases of dental fusion. The best
treatment plan depends on the nature of the anomaly, its location, the morphology of the pulp chamber
and root canal system, the subgingival extent of the separation line, and the patient compliance. Following
an analysis of radiographical and clinical data, it was possible to solve our patient’s dental anomaly with a
multidisciplinary approach
The platform switching approach to optimize split crest technique.
No full textThe split crest technique is a reliable procedure used simultaneously in the implant positioning. In the literature some authors describe a secondary bone resorption as postoperative complication. The authors show how platform switching can be able to avoid secondary resorption as complication of split crest technique
4 mm short implants in the treatment of reconstructive surgery failures of the atrophic posterior mandible: a retrospective study.
No full textBACKGROUND: Bone augmentation procedures can be associated with significant patient morbidity, can be more expensive and may requires longer times (up to 1 year) before patients are rehabilitated with implant-supported prostheses. Moreover complications, especially for vertical augmentation techniques, are common.
AIM/HYPOTHESIS: The aim of this retrospective study was to evaluate whether short (4 mm) dental implants could be a suitable alternative in the failure of reconstructive surgery in the atrophic posterior mandible.
MATERIAL AND METHODS: Patients experienced failure in the reconstructive surgery of the atrophic posterior mandible were enrolled. The type of reconstructive surgery, surgical complications, data related to the timing of failure and ways of resolution were collected. For their rehabilitation, super short (4 mm) implants (Twin-Kone"Universal System, Global D, France) with a mean diameter of 4.09 mm were placed. After 4 months, provisional reinforced acrylic prostheses were delivered. Provisional prostheses were replaced, after 4 months, by definitive screw-retained metal-resin restoration. Outcome measures were prostheses and implant failures, any complications, peri-implant marginal bone level changes and patient satisfaction. Patients were followed up to an average of 2.37 years after loading.
RESULTS: 24 patients (5 Males and 19 Females; mean age: 60.5 year old) were enrolled in this study. They were treated with inlay technique, onlay technique, alveolar distraction osteogenesis and Guided Bone Regeneration (GBR). Complications were dehiscence/graft exposition, necrosis, periimplantitis, paresthesia, non integrated graft and graft infection; they occurred on average 6.5 weeks after surgery. Significantly more complications occurred in the GBR group than the onlay and the distraction group (Kruskal Wallis test; P = 0.001). 58 super short (4 mm) implants were placed in the posterior mandible after the resolution of the complications. Up to a mean period of 2.37 years after loading, only two patients experienced short implant and/or prosthesis failures. The resolution way of reconstructive complications did not influence the number of short implant complications. There were no statistically significant differences between marginal bone level changes at implant placement and at 1, 2, 3 years follow-up. The marginal bone level at 3 years follow-up was 0.62 mm. All patients were fully satisfied with the implant treatment.
CONCLUSIONS AND CLINICAL IMPLICATIONS: This study suggests that super short (4 mm) dental implants could be a suitable, faster, cheaper and easier rehabilitation option in the failure of the reconstructive surgery of the atrophic posterior mandible. These results need to be confirmed by trials with follow-ups of at least 5 years
Micro-scale surface patterning of titanium dental implants by anodization in the presence of modifying salts
No full textThe bone-implant interface influences peri-implant bone healing and osseointegration. Among various nano-engineering techniques used for titanium surface modification, anodization is a simple, high-throughput and low-cost process, resulting in a nanoporous oxide coating which can promote osseointegration and impart antimicrobial and immunomodulatory properties. We anodized rounded tip dental implants of commercial grade titanium in aqueous phosphoric acid modified with calcium and potassium acetate, and characterized the resulting surface morphology and composition with scanning electron microscopy and energy dispersive spectrometry. The appearance of nanopores on these implants confirmed successful nanoscale morphology modification. Additionally, the metal cations of the used salts were incorporated into the porous coating together with phosphate, which can be convenient for osseointegration. The proposed method for surface nanostructuring of titanium alloy could allow for fabrication of dental implants with improved biocompatibility in the next stage of research
- …
