23 research outputs found
Immediate post-extractive implantation with provisionalization of two deciduous canines and related impacted permanent canines, a case report.
No full textThis is a case study of replacing two maxillary deciduous canines and related impacted permanent canines with two single implants, in conjunction with grafting lost hard tissue. By using immediate post- extraction implant placement and provisionalization protocols, the stability of the implant was ensured while bypassing the bony void created by removal of the primary canines. In this respect, it was originally planned that a minimum healing period of one year would be observed.Taking the time to observe any changes provides an opportunity to evaluate the gingival esthetic before the final step is carried out. By the time the final restorations were fitted, the graft and tissues were stable. The time involved not only placed biology on the clinician's side, but also helped the patient to spread the cost. CLINICAL RELEVANCE: In modern aesthetic dentistry harmonious results can be achieved relatively quickly, when the prerequisites for aesthetic success have already been met but, as this case demonstrates, human biology often requires more time and patience for augmented hard and soft tissues to heal and mature
Key Factors for Predictable Aesthetics in Single Tooth Immediate Implantation with Provisionalization
No full textEarly implant placement is one treatment option for implant therapy following a single-tooth extraction in the anterior maxilla. In this article some key factors are presented to analyze and follow in an effort to obtain a predictable and acceptable esthetic result. The creation of predictable peri-implant esthetics requires proper preservation of the osseous and soft tissues around the failing teeth, proper 3-D implant placement and proper understanding of the prosthetic management. The surgical technique presented here is characterized by tooth extraction without flap elevation, implant placement in a correct three-dimensional position, simultaneous contour augmentation on the facial aspect with connective tissue grafting combined with heterologous bone chips filled into the implant bone gap
Maxillary sinus floor augmentation with vegetal hydroxyapatite “versus” demineralized bovine bone : a randomized clinical study with a split-mouth design
No full textPurpose: The objective of this paper was to compare histologically and histomorphometrically a
hydroxyapatite originated by algae (Algipore) versus demineralized bovine bone (Bio-Oss Geistlich
Pharma, Wolhusen, Switzerland) utilised as bone substitutes in maxillary sinus floor elevation with
a split-mouth design.
Materials and Methods: Five healthy patients underwent a bilateral maxillary sinus floor elevation
procedure under local anesthesia. In each case, residual posterior maxillary bone height was between 2 mm and 5 mm. The original bone was augmented with a split-mouth design with 100% Algipore on the test side and 100% Bio-Oss on the contralateral control side. After a healing period of 6-8 months during the re-opening surgery biopsies were retrieved and Xive Implants (Dentsply Implants, Mannheim, Germany) were placed.
Results: At microscopic level both Bio-Oss and Algipore blocks resulted well osseointegrated,
without inflammatory infiltrate, with an high level of mineralization, without gap between the bone
and biomaterial interfaces that resulted indistinguishable. A close contact between the two faces was
observed without the presence of slits. Histomorphometrical analysis showed that, on average, the
percentage of medullary space was higher for the Bio-Oss compared with Algipore (38.61% ±8.90%
vs. 29.23% ±7.89%). In contrast, the mean value of residual particles of biomaterials was higher in
Algipore than in Bio-Oss specimens (42.86% ±18.61% vs. 22.30% ±6.40% respectively).
Conclusions: The data confirmed that sinus lift carried out with Algipore performed in a similar way
of that carried out with Bio-Oss and that this material is safe, predictable and without invasiveness
Uprighting dei molari mesioinclinati mediante la molla in acciaio NiTi-SE
No full textGli Autori in questo lavoro presentano le caratteristiche biomeccaniche e tecniche, le indicazioni e le applicazioni cliniche, i vantaggi e gli svantaggi della molla in acciaio NiTi-SE per l’uprighting dei molari. Mediante questa molla utilizzata per raddrizzare 21 molari, vengono analizzati i molteplici benefici dell’uprighting molare dal punto di vista parodontale, ortognatodontico, gnatologico, protesico ed implantologico. Si sottolinea, altresì, l’importanza di un approccio multidisciplinare tra le varie branche odontoiatriche, per collaborare alla risoluzione di una complessa riabilitazione.The sequelae of tooth loss are both numerous and varied, increasing in severity with time. Corrective therapeutic measures can become complex both in the diagnosis and treatment of these situations. The need for interdisciplinary approach within the various areas of dentistry to collaborate in the complex rehabilitation becomes very important. The aim of this work is to show the various benefits of molar uprighting from periodontal, orthodontic, and restorative view points, and to evaluate the indications, the advantages and disadvantages of the Ni-Ti-SE steel uprighting springs. This type of spring has been employed to upright 21 molars of 11 patients. It consists of a combination of superelastic material (.16x.22 titanol) which is linked with a steel wire (.17x.22) by means of a crimped cross connector. The Authors determined that in wide areas the pseudoelastic side transfers constant moments and forces to the molars. Besides showed that is possible to apply intrusive forces over the whole uprighting area by bending and adjusting the steel part. The results determine that if an anchoring segment proves the required stability this new uprighting spring is an effective method to upright molars quickly and without periodontal or gnathologic problem
Maxillary sinus elevation with an alloplastic material and implants: 11 years of clinical and radiologic follow-up
No full textPurpose: The aim of this retrospective study was to determine the clinical and radiologic results, over an 11-year period, of resorbable hydroxyapatite used as a bone substitute in maxillary sinus elevation. Materials and Methods: Between 1996 and 2007, we treated 26 patients with maxillary sinus elevation (27 sinuses) using resorbable hydroxyapatite and simultaneous insertion of 47 titanium implants. Patients were recruited, screened, and accepted or rejected sequentially based on specific inclusion/exclusion criteria. Ten months later, 2-stage surgery and prosthetic rehabilitation were performed. Results: During the 11-year follow-up period (mean, 6 years), all the implants appeared clinically and radiologically integrated. The cumulative survival rate was 100%. During the observation period, the resorption of the graft apically to the implant was 1.8 mm on average. Conclusion: The posterior area of the maxilla often represents a challenging clinical situation because of either the lack of alveolar bone or the structural characteristics of the trabeculae in that specific area. The high survival rate of the implants and the stability of the mineralization of the graft confirmed that resorbable hydroxyapatite was a suitable material for sinus grafting
Treatment of maxillary ridge resorption by sinus augmentation with iliac cancellous bone, anorganic bovine bone, and endosseous implants: a clinical and histologic report
No full textIn this clinical study, a 1:1 mix of particulate cancellous bone and marrow (PCBM) and bovine deproteinized bone (Bio-Oss) was used to fill cavities after elevating the sinus mucosa for major sinus dehiscences. Ten patients with edentulous posterior maxillae were treated with 12 sinus augmentation procedures according to a 2-stage technique, and 30 Frialit-2 endosseous implants were used to complete the implant-prosthetic rehabilitation. Bone cylinders were removed at second-stage surgery immediately prior to implant placement (5 to 7 months after grafting), and histologic evaluation was performed. The results showed that Bio-Oss is a reliable osteoconductive material and its association with PCBM leads to the formation of new bone with an increased overall density
Granular deproteinized bovine bone for horizontal ridge augmentation: a non-conventional clinical technique (Impiego di osso bovino deproteinizzato granulare negli incrementi orizzontali: presentazione di una tecnica non convenzionale)
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