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Yang-Hoon Park1
, Richard Leesungbok1, Suk-Won Lee1, Janghyun Paek2, Jeong-Yol Lee3
, Richard Leesungbok1, Suk-Won Lee1, Janghyun Paek2, Jeong-Yol Lee3
Abstract
Purpose
The purpose of this study was to evaluate the effect of healing abutment height and measurement angle on implant stability when using Periotest and AnyCheck.
Materials and methods
60 implants were placed into artificial bone blocks. After implant insertion, 2, 3, 4 and 5 mm healing abutments were installed on 15 specimens, respectively. Insertion torque value, implant stability test, Periotest value were measured. Insertion torque value was controlled between 45 – 55 Ncm. AnyCheck was used for measuring implant stability test and Periotest M was used for measuring Periotest value. Implant stability test and Periotest value were measured at the angles of 0 and 30 degrees to the horizontal plane. Measured values were analyzed statistically.
Figures and Tables
Fig. 1
(A) Cross-sectional view of CMI IS-II implant (4.0 mm diameter, 10.0 mm length) placed into artificial bone block. (B), (C), (D), (E) show radiographic images of specimens of 2, 3, 4, 5 mm healing abutments, respectively. In the radiographic images, (a) shows healing abutment and (b) shows implant. (c) shows cortical layer and (d) shows cancellous bone of artificial bone block.
Fig. 2
Schematic representation of implant stability measurement. Long axis of implant (a) was perpendicular to horizontal plane (b). IST and PTV were measured at the angles of 0° (c) and 30° (d). Note that measurement angle of 0°(c) was parallel to the horizontal plane (b). (A) shows healing abutment and (B) shows implant. (C) shows cortical layer and (D) shows cancellous bone of artificial bone block.
Fig. 3
(A) Results of Kruskal-Wallis test of implant stability test (IST) measured at the angle of 0° (n = 15). (B) Results of Kruskal-Wallis test of implant stability test (IST) measured at the angle of 30° (n = 15). Height of healing abutments (HA) were 2 mm, 3 mm, 4 mm and 5 mm in group 1, 2, 3 and 4, respectively.
*Different letters (a, b, c) indicate significant differences (P < .05).
Fig. 4
Results of Mann-Whitney U test of implant stability test (IST) of each group measured at the angle of 0° and 30°. Height of healing abutments (HA) were 2 mm, 3 mm, 4 mm and 5 mm in group 1, 2, 3 and 4, respectively. IST measured at the angle of 30° was greater than IST measured at the angle of 0°. As the height of HA increased, difference between IST measured at the angle of 0° and 30° increased.
Group 1; 2 mm healing abutment, Group 2; 3 mm healing abutment, Group 3; 4 mm healing abutment, Group 4; 5 mm healing abutment.
Fig. 5
(A) Results of Kruskal-Wallis test of Periotest value (PTV) measured at the angle of 0° (n = 15). (B) Results of Kruskal-Wallis test of Periotest value (PTV) measured at the angle of 30° (n = 15). Height of healing abutments (HA) were 2, 3, 4 and 5 mm in group 1, 2, 3 and 4, respectively.
*Different letters (a, b, c) indicate significant differences (P < .05).
Fig. 6
Results of Mann-Whitney U test of Periotest value (PTV) of each group measured at the angle of 0° and 30°. Height of healing abutments (HA) were 2, 3, 4 and 5 mm in group 1, 2, 3 and 4, respectively. PTV measured at the angle of 30° was greater than PTV measured at the angle of 0°. As the height of HA increased, difference between PTV measured at the angle of 0° and 30° increased.
Group 1; 2 mm healing abutment, Group 2; 3 mm healing abutment, Group 3; 4 mm healing abutment, Group 4; 5 mm healing abutment.
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