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Journal of Oral Science & Rehabilitation No. 3, 2017

T a p e r e d i m p l a n t s f o r b u n d l e b o n e p r e s e r v a t i o n Figs. 3 & 4 Figs. 5 & 6 Figs. 7 & 8 Table 1 Implant placement V-L A-B A-Bc A-L A-Lc (healing period) (mean ± SD) (mean ± SD) (mean ± SD) (mean ± SD) (mean ± SD) Crestal (8 weeks) 0.58 ± 0.30 1.83 ± 0.40 1.33 ± 0.50 0.45 ± 0.70 1.24 ± 0.70 Subcrestal (8 weeks) 0.64 ± 0.50 1.44 ± 0.90 1.22 ± 0.70 0.67 ± 0.70 1.52 ± 0.50 Crestal (12 weeks) 0.83 ± 0.30 1.26 ± 0.70 1.69 ± 0.30 0.88 ± 0.80 1.22 ± 0.70 Subcrestal (12 weeks) 0.84 ± 0.10 1.31 ± 0.50 1.57 ± 0.10 0.33 ± 0.80 0.98 ± 0.90 p value 0.7219 0.0345 0.1281 0.0235 0.0122 Level of significance p > 0.05 p < 0.05* p < 0.05* p < 0.05* p < 0.05* V-L = difference between the buccal bone crest and the lingual bone crest; SD = standard deviation; A-B = distance from the top of the implant neck to the buccal bone crest; A-Bc = distance from the top of the implant collar to the first BIC at the buccal aspect; A-L = distance between the top of the implant collar and the lingual bone crest; A-Lc = distance from the top of the implant collar to the first BIC at the lingual aspect; * indicates statistical significance. Journal of Oral Science & Rehabilitation Volume 3 | Issue 3/2017 33 Fig. 3 Biopsy at 8 weeks of an implant placed at the crestal level. Slight resorption of the vestibular wall was observed, with stable and thick soft tissue. Fig. 4 Biopsy at 8 weeks of an implant placed at the subcrestal level. Slight resorption of the vestibular wall with neoformed bone was observed around the implant neck, with stable and thick soft tissue. Fig. 5 Bone–implant contact at 12 weeks in unloaded bone. The bone was in intimate contact with the BIOETCH surface. Fig. 6 Biopsy at 12 weeks of an implant placed at the crestal level. Remodeling of the buccal and lingual walls with neoformed bone around the implant neck was observed. Fig. 7 Biopsy at 12 weeks of an implant placed at the subcrestal level. Remodeling of the vestibular and lingual walls with a large amount of neoformed bone protecting the implant neck was observed. Fig. 8 Bone–implant contact at 8 weeks in healed bone. The bone was in intimate contact with the BIOETCH surface. Table 1 Mean values (mm) ± standard deviation mm for the Brunner and Langer test (nonpara- metric analysis of repeated measures). Description of the data in healed bone.

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