Resorption of labial bone in maxillary anterior implant

Abstract

PURPOSEThe purpose of this study was to evaluate the amount of resorption and thickness of labial bone in anterior maxillary implant using cone beam computed tomography with Hitachi CB Mercuray (Hitachi, Medico, Tokyo, Japan).MATERIALS AND METHODSTwenty-one patients with 26 implants were followed-up and checked with CBCT. 21 OSSEOTITE NT® (3i/implant Innovations, Florida, USA) and 5 OSSEOTITE® implants (3i/implant Innovations, Florida, USA) were placed at anterior region and they were positioned vertically at the same level of bony scallop of adjacent teeth. Whenever there was no lesion or labial bone was intact, immediate placement was tried as possible as it could be. Generated bone regeneration was done in the patients with the deficiency of hard tissue using Bio-Oss® (Geistlich, Wolhusen, Switzerland) and Bio-Gide® (Geistlich, Wolhusen, Switzerland). Second surgery was done in 6 months after implant placement and provisionalization was done for 3 months. Definite abutment was made of titanium abutment with porcelain, gold and zirconia, and was attached after provisionalization. Two-dimensional slices were created to produce sagittal, coronal, axial and 3D by using OnDemand3D (Cybermed, Seoul, Korea).RESULTSThe mean value of bone resorption (distance from top of implant to labial bone) was 1.32 ± 0.86 mm and the mean thickness of labial bone was 1.91 ± 0.45 mm.CONCLUSIONIt is suggested that the thickness more than 1.91 mm could reduce the amount and incidence of resorption of labial bone in maxillary anterior implant.

Immediate implant placement and provisionalization: Aesthetic outcome 1 year after implant placement. A prospective clinical multicenter study

“…When an implant is placed in a more palatal position, a space is created between the implant and the buccal plate, allowing bone ingrowth from the surrounding interdental septa and from cranial more easily . To achieve optimal ridge preservation simultaneously with implant placement, research corroborated that a minimum thickness of at least 2 mm buccal hard tissue should be present . Retrospective results of our IIPP procedure revealed that, in case of application of a bovine substitute, the buccal crest thickness increased from 0.9 to 2.4 mm .…”

The Thickness of Alveolar Bone at the Mandibular Canine and Premolar Teeth in Normal Occlusion

“…12,14 Significantly less implant failure was reported in the group with at least 2 mm of labial bone thickness. 15,16 The mean buccal bone thickness at 3 and 5 mm from the CEJ in canines, first premolars, and second premolars was below 2 mm. The frequency distribution of thick buccal bone wall at 3 mm from CEJ of the second premolar had the highest value (17.5%) when compared with that of canine (1.3%) and the first premolar (0.0%).…”

Fate of the buccal bone at implants placed early, delayed, or late after tooth extraction analyzed by cone beam CT: 10‐year results from a randomized, controlled, clinical study

“…), while in a case series it was reported that buccal bone resorption extended to the apex in one‐third of 26 immediately placed implants (Cho et al. ).…”

“…) still, only a handful of publications report on immediately placed implants (Cho et al. ; Degidi et al. ; Roe et al.…”