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Influence of Thickness of the Peri-implant Soft Tissue on Marginal Bone Remodeling

2017-03-13 20:23:22 | BioPortfolio

Summary

The aim of this observational study is the evaluation of marginal bone remodeling after surgical implant placement, correlating the gingival thickness with the bone resorption rate.

Description

The present study was designed as a multicenter prospective clinical trial. Five clinical centers will treat patients through the placement of a single dental implant. The fixtures will be prosthetic loaded three months after placement and will be acquired periapical radiographs at each timepoint (base-two months-three-months-6 months-12 months). For every inserted implants the experimental parameters will be collected for the following 2 years.

Surgical procedure. All patients will receive antibiotic prophylaxis with 2 g of amoxicillin one hour before surgery. Crestal incision is performed under local anesthesia with articaine 4% with epinephrine, taking care to preserve the keratinized tissue. With the help of a periosteal elevator, it will be set up carefully buccal flap total thickness, and the vertical thickness of the soft tissue will be measured with a labeled probe every 1.0 mm. If the vertical thickness of the soft tissue will be 2 mm or less, it will be considered thin. If mucosal thickness will be greater than 2 mm, it will be considered thick. After measurement, the lingual flap will be raised to full-thickness, and will be prepared the site for implant placement. The implant site will be at least 1.5 mm from the tooth / teeth adjacent, and must be surrounded by at least 1 mm of bone is buccal to lingual. With a platform switching facility a millimeter will be placed below the level of the bone crest with a one-stage approach as per the manufacturer's recommendations. After insertion, it will be screwed a healing abutment, and the flaps will be sutured without tension with interrupted sutures 4/0. Patients of both groups will be instructed to disinfect the site through a rinse twice a day for a week for 1 minute with 0.12% chlorhexidine digluconate. Patients will be advised to avoid chewing on the operated site and cleaning the healing abutments with an ultra soft toothbrush. After 2 months of healing, it will be evaluated clinical stability and the radiographic appearance of the plants. All plants will be rehabilitated by the prosthetist with single screwed restorations. After the prosthetic treatment, patients will receive oral hygiene instruction and will be monitored through calls to ensure periodontal health (Bleeding on Probing <20% and Plaque Index <25%) throughout the study period.

Radiographic evaluation Intraoral radiographs will be captured in high-resolution mode with a film, customized support from a jig polyvinylsiloxane, using the technique of parallel rays. Intraoral radiographs will be acquired after implant placement (baseline-assessment of inclusion fairness), after 2 months of healing (osseointegration rating), after insertion of the crown (3 months-adaptation assessment of the restoration prosthetic), after 6 months (early loading of evaluation) and after a year of recovery (of the medium-term load rating). The number of intraoral radiographs will be the same which normally is carried out in the course of an implant-prosthetic rehabilitation. The images will be obtained in such a way that the implant-abutment interface is clearly visible. Measurements of bone level will be performed by a blinded central reader using a dedicated program at 20 times magnification. Before the calculation of the crestal bone changes, the RVG images will be calibrated with the implant diameter. bone loss will be calculated by comparing the radiographs at baseline with the radiographs obtained during follow-up visits. The system board and the first contact radiographic bone-implant will be selected as reference points to calculate bone loss. The average of the mesial and distal measurements will be recorded for each implant.

Study Design

Conditions

Alveolar Bone Loss

Intervention

intra-operatory measurement during implant placement

Location

Piezosurgery Academy
Parma
Italy
43100

Status

Recruiting

Source

International Piezosurgery Academy

Results (where available)

View Results

Links

Published on BioPortfolio: 2017-03-13T20:23:22-0400

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Medical and Biotech [MESH] Definitions

Resorption or wasting of the tooth-supporting bone (ALVEOLAR PROCESS) in the MAXILLA or MANDIBLE.

Insertion of an implant into the bone of the mandible or maxilla. The implant has an exposed head which protrudes through the mucosa and is a prosthodontic abutment.

Surgical procedure to add bone to the ALVEOLAR RIDGE in children born with a CLEFT LIP and a CLEFT PALATE.

Guided BONE TRANSPLANTATION of the MAXILLARY SINUS surface with a BONE SUBSTITUTE grafting. It increases the bone volume at the site of the DENTAL IMPLANT and helps stabilize it.

The fibrous CONNECTIVE TISSUE surrounding the TOOTH ROOT, separating it from and attaching it to the alveolar bone (ALVEOLAR PROCESS).

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