A prospective, multicentre study of 6‐mm short implants in posterior alveolar bone supporting splinted crowns: A 5‐year follow‐up study

Abstract

Aim To evaluate the clinical and radiographic outcomes of 6‐mm short implants, placed in the posterior jaws and supporting splinted crowns, at 5 years after early loading. Materials and Methods Forty‐five patients with 95 implants (diameter: 4 mm; length: 6 mm) were enrolled at three centres. Two to three implants were placed in either the maxillary or the mandibular posterior region in each patient and restored with screw‐retained splinted crowns at 6 weeks later. Clinical and radiographic outcomes were evaluated at implant placement, at loading, and at 6, 12, 24, 36, and 60 months after loading. Biological and mechanical complications were recorded. Marginal changes in bone level in relation to clinical parameters were evaluated using a generalized linear mixed model. Results During the 5 years of follow‐up, the mean change in the marginal bone level (MBL) was 0.04 ± 0.14 mm. Four implants in four patients were lost before loading, one implant in one patient was lost at the 5‐year follow‐up, and two patients were lost to follow‐up. The survival and success rates were 88.4% (38/43) at the patient level. The incidence rates of peri‐implant mucositis and peri‐implantitis were 29.4% and 7.0%, respectively. The rate of technical complications was 14.0%. Conclusions Over a 5‐year period, 6‐mm short implants supporting early loaded splinted crowns in maxillary or mandibular posterior regions showed stable MBLs and acceptable technical and biological complication rates.

The effect of crown to implant ratio on marginal bone level and bone density in non-splinted single implant: A cross-sectional study

“…And it is interesting to noticed that the mean marginal bone level changes were bone gain instead of bone loss in both groups in the present study. These ndings were consistent with previous studies of Bicon locking-taper implants (28, 29 Peri-implant bone gain of other implant systems also had been reported (30)(31)(32)(33). Blanes et al reported 43.8% of ITI posterior dental implants experienced some bone gain after 5 to 10 years follow-up (30).…”

Effects of crown-to-implant ratio on marginal bone level and bone density in non-splinted single implants: a cross-sectional study

“…Yoo et al [ 30 ] documented crestal bone gain around immediately loaded locking-taper Bicon implants, with five implants gaining > 2 mm. Peri-implant bone gain has also been reported with other implant systems [ 31 – 34 ]. In Blanes et al [ 31 ], 43.8% of ITI posterior dental implants exhibited bone gain after 5–10 years of follow-up.…”