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Journal of Oral Science & Rehabilitation Issue 01/2016

18 Volume 2 | Issue 1/2016 Journal of Oral Science & Rehabilitation I m pla n t pos ition in g wi thi n e xtracti o n so cke ts C: top of the adjacent bony crest; IS: implant shoulder. No statistically significant differences (p < 0.05) were found between the lingual defects at B-sites and the buccal defects at L-sites for vertical depth and horizontal gap. * p < 0.05 between B-sites and L-sites for C–IS at buccal and lingual aspects. Residual vertical depth Residual horizontal gap C–IS Buccal Lingual Buccal Lingual Buccal Lingual B-sites 0.0 4.8 (1.3) 0.0 1.2 (0.4) 0.0 0.4 (0.3) 0.0 5.0 (4.3; 5.0) 0.0 1.0 (1.0; 1.3) 0.0 0.5* (0.3; 0.5) L-sites 4.3 (1.3) 0.0 1.2 (0.3) 0.0 0.0 1.5 (0.8) 5.0 (3.0; 5.0) 0.0 1.0 (1.0; 1.5) 0.0 0.0 1.0* (1.0; 1.8) Table 1 IS: implant shoulder; C: top of the adjacent bony crest; B: most coronal point of contact between the bone and implant; S: surface of the implant at the top of the threads. * p < 0.05 between B-sites and L-sites. ** p < 0.05 between buccal and lingual aspects. PM: top of the mucosal margin; C: top of the adjacent bony crest; B: most coronal point of contact between the bone and implant; IS: implant shoulder. * p < 0.05 between buccal and lingual aspects. ** p < 0.05 between B-sites and L-sites. IS–C Absolute bone loss IS–B C–B S–C Residual vertical defect Residual horizontal defect Buccal Lingual Buccal Lingual Buccal Lingual Buccal Lingual Buccal Lingual B-sites 1.6 (1.9) 0.1 (0.7) 1.6 (1.9) 0.6 (0.5) 1.9 (1.8) 1.7 (1.8) 0.3 (0.3) 1.6 (1.4) 0.2 (0.3) 1.2 (0.5) 0.7*, ** 0.0** 0.7*, ** 0.7 1.5 0.9 0.1*, ** 1.4** 0.1** 1.2*, ** (0.7; 1.4) (-0.4;0.4) (0.7; 1.4) (0.3; 0.9) (0.9; 1.7) (0.9; 1.6) (0.0; 0.4) (0.7; 1.9) (0.0; 0.5) (0.8; 1.5) L-sites 0.4 (0.7) -0.8 (0.9) 0.4 (0.7) 0.7 (0.4) 1.4 (0.7) 1.0 (0.8) 1.1 (0.9) 1.6 (1.2) 0.4 (0.2) 0.5 (0.4) 0.5*, ** -0.6** 0.5* 0.7 1.6 0.8 1.2* 1.2 0.4 0.3* (0.1; 0.8) (-1.2; -0.2) (0.1; 0.8) (0.5; 1.1) (1.0; 1.8) (0.4; 1.7) (0.4; 1.7) (0.8; 2.5) (0.3; 0.5) (0.3; 0.7) Table 2 Figs. 4 & 5 Table 1 Clinical dimensions (mm) of the residual bone defects after implant placement (n = 7). Mean values (standard deviations) and medians (25th ; 75th percentiles) are reported. Fig. 4 Ground sections illustrating the histological healing after four months at the B-sites (20× magnification; Stevenel’s blue and alizarin red stain). Fig. 5 Ground sections illustrating the histological healing after four months at the L-sites (20× magnification; Stevenel’s blue and alizarin red stain). BIC% PM–C PM–B PM–IS Buccal Lingual Total Buccal Lingual Buccal Lingual Buccal Lingual B-sites 31.2 (23.2) 34.9 (22.5) 33.1 (22.3) 3.9 (0.4) 2.8 (0.5) 4.2 (0.5) 4.4 (1.4) 2.3 (1.7) 2.7 (0.8) 13.4 34.0 23.9 3.9* 2.8* 4.0 3.8 2.8** 2.6 (13.0; 52.6) (16.6; 47.3) (14.8; 49.9) (3.7; 4.2) (2.6; 3.1) (3.9; 4.6) (3.5; 4.7) (2.5; 3.3) (2.3; 3.2) L-sites 35.2 (19.7) 31.6 (34.9) 35.0 (16.6) 4.2 (0.4) 2.5 (0.4) 5.1 (1.1) 4.3 (1.4) 3.8 (0.7) 3.3 (1.1) 30.7 35.2 33.0 4.2* 2.5* 5.3* 3.7* 3.5** 2.9 (20.9; 47.7) (25.6; 46.3) (23.3; 47.0) (4.1; 4.2) (2.4, 2.8) (4.3; 5.8) (3.3; 5.4) (3.3; 4.1) (2.8; 3.5) Table 3 B-sites 0.04.8 (1.3) 0.01.2 (0.4) 0.00.4 (0.3) 0.05.0 (4.3; 5.0) 0.01.0 (1.0; 1.3) 0.00.5* L-sites 4.3 (1.3) 0.01.2 (0.3) 0.00.01.5 (0.8) 5.0 (3.0; 5.0) 0.01.0 (1.0; 1.5) 0.00.01.0* 0.71.50.90.1*, ** 0.71.60.81.2* 1.20.40.3* 13.434.023.93.9* 4.03.82.8** 30.735.233.04.2*

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