The aim was evaluate the perimplant crestal bone loss after a supracrestal apical-coronal position of the implant collar using submerged fixtures for posterior sectors. The Authors proposed a radiographic evaluation of the bone level around 51 osseointegrated implants with supracrestal technique and 21 short fixtures at 1, 2, 3, years after placement. This surgical procedure left the implant collar in a supracrestal position without a cervical widening of cortical bone (counter sink). The Authors reported a limited loss of crestal bone and a very good perimplant bone stability using this surgical technique. They semplified the surgical protocol and, depending upon the tickness of the mucosa, sometimes avoided the second intervention. Using implants that were 1.5 – 2.0 mm longer they obtained a significant gain in anchorage because of a rough surface and a supracrestal position. Besides the absence of cervical widening of the fixtures optimized initial stability, locking the collar in cortical bone. The supracrestal technique is indicated above all in maxillary and mandibular posterior sectors and it allowed a gain of 1 to 2 mm in implant lenght and a better apical-coronal relationship to the adjacent teeth. It permitted the creation of a sufficent perimplant biologic width, limiting the bone loss. It allowed improvement of the clinical crown/implant relationship facilitating the prosthetic restoration.
|Titolo:||Supracrestal implant collar placement vs short fixtures in submerged implants|
GARAGIOLA, UMBERTO (Primo)
|Settore Scientifico Disciplinare:||Settore MED/28 - Malattie Odontostomatologiche|
|Data di pubblicazione:||ago-2001|
|Appare nelle tipologie:||01 - Articolo su periodico|