PURPOSE: The purpose of this article is to evaluate the soft and hard tissue response to immediately loading implants. In addition, the soft tissue response to a transmucosal abutment that is narrower than the implant platform was assessed. MATERIALS AND METHODS: Ten consecutive hopeless teeth in the anterior maxilla without compromised bone tissue were enrolled. The infection control phase of periodontal therapy was completed. Immediately after tooth extraction, an implant was placed with a 6 mm platform diameter. A provisional 4 mm diameter transmucosal abutment was connected and a provisional crown was adapted and adjusted for non functional immediately loading. Three months following implant placement, definitive prosthetic rehabilitation was performed. At the time of prosthesis insertion (baseline) and every six months there after, radiographic assessments, pocket probing depths (PPD), recession (REC) and papilla height (PH) were measured. An image analysis software application was used to compare the radiographic bone remodeling at the mesial and distal aspects of the implants. The statistical significance was analyzed by the Student’s t-test with p<0.05. RESULTS: Nine patients with ten sites were treated. Mean follow up time was 22 months with a range of 36 to 18 months. All the 10 implants were osseointegrated . Software analysis of radiographic films showed a bone resorption of 0.78 mm (SD: 0,3690). The mean values were statically significant (p≤ 0,005) using a mean reference value of 1.1 mm. PPD did not exceed 3 mm in any site (average: 2.8 mm). REC gain mean value was 0.2 mm and PH gain mean value was 0.25 mm. CONCLUSIONS: Within the limit of this study, the data suggests that immediately loading with Platform Switching seems provide peri-implant hard tissue stability, with a consequent soft tissue stable profile.
|Titolo:||Preservation of Peri-implant Soft and Hard Tissues Using Platform Switching of Implants Placed in Immediate Extraction Sockets : A Proof-of-Concept Study with 12- to 36-month Follow-up|
|Autori interni:||RASPERINI, GIULIO (Ultimo)|
|Parole Chiave:||Dental implants; Immediate implants; Immediate loading; Marginal bone loss; Platform switching|
|Settore Scientifico Disciplinare:||Settore MED/28 - Malattie Odontostomatologiche|
|Data di pubblicazione:||2007|
|Appare nelle tipologie:||01 - Articolo su periodico|