Bucco‐Lingual Crestal Bone Changes After Immediate and Delayed Implant Placement

Abstract

This study suggests that circumferential defects could heal clinically without any guided bone regeneration (GBR) in both experimental groups, and that the procedure was virtually free from complications in the postoperative period, probably because of the absence of barrier membranes and/or grafting materials. Histologically, peri-implant defects of over 1.5 mm heal by connective tissue apposition, rather than by direct bone-to-implant contact, but clinically this healing may be very successful. No histological analysis was carried out in the present study, but even the largest residual gaps were filled with hard tissue that could not be probed. Thus, such outcomes can be considered clinically successful. The different rate of bone remodeling around immediate or delayed implants could have implications for the preferred timing of implant placement in sites of high esthetic concern.

Radiographic Bone Changes Around Immediately Placed Immediately Restored Dental Implants In Periodontally Compromised Sites

“…These results are consistent with several studies [22][23][24][25][26][27][28][29]. Schropp et al [22] reported that new bone formation occurs in infrabony defects associated with immediately placed implants in extraction sockets.…”

“…Defect height reductions between 68% and 83% were reported. Covani et al [24] observed that complete defect fill occurred in the peri-implant gaps following immediate and immediate-delayed implant placement. These observations are corroborated by human histologic studies that have shown spontaneous bone regeneration and osseointegration when peri-implant defects were less than 2 mm in a horizontal dimension [25].…”

Dimensional changes of hard and soft tissue after immediate implantation in comparison with conventional tooth extraction

“…However, despite the differences, vertical changes at distal and mesial points were not significant presumably, because of the presence of enough bone bulk in these regions and consequently less reduction. The results of this study were similar to Chen,Wagenbergand Nowzari 4,12,18 , but different from Botticelli, Covani, Lindhe, Araujostudies 9,6,8,17 . The reason might be the fact that in our study, hard tissue changes were evaluated in 8 points and the gaps greater than 2 mm between implant and crest, were filled with DFDBA, which could prevent more reductions.…”

“…It has been calimed that the continuation of socket remodeling after immediate implantation could negatively affect the esthetic outcome of such technique if used at esthetically important regions. 5 Covani et al 6 measured the buccolingual width reduction between immediate and delayed implantation methods were 1.9 mm and 3 mm respectively as compared to the pre-extraction bone position. Quirynen 7 evaluated 351 studies and reported that failure of immediate implantation hd been less than 5 percent, and if these implants were loaded immediately the percentage would increase.…”

Piezohirurška ekspanzija alveolarnih grebenova u svrhu imedijatne ugradnje dentalnih implantata

“…Cepanje kosti u ovoj regiji je znatno teže i nosi sa sobom rizik od preloma bukalne lamele, što imedijatnu implantaciju čini praktično nemogućom, pri čemu ovi prelomi mogu voditi znatnijoj koštanoj resorpciji te sekvestraciji [8].…”