The effect of internal versus external abutment connection modes on crestal bone changes around dental implants: A radiographic analysis

Ki Tae Koo, Eun Jeong Lee, Jae Yoon Kim, Yang Jo Seol, Jung Suk Han, Tae Il Kim, Yong Moo Lee, Young Ku, Ulf M E Wikesjö, In Chul Rhyu

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Background: To the best of our knowledge, the influence of external versus internal implant-abutment connections on crestal bone remodeling has not been reported. The aim of the present study is to investigate the influence of the abutment connection on peri-implant crestal bone levels (CBLs) using radiographic recordings. Methods: Radiographic recordings from 40 single-tooth implants (20 external and 20 internal octagonal connections; one implant/patient) in 40 patients (15 males and 25 females; mean age: 54.3 years) were selected for analyses. The radiographic evaluation included the following: 1) linear bone change (LBC); 2) dimensional change (DC); and 3) angle between the implant and adjacent bone (AIB). Differences in LBC, DC, and AIB between implant placement and 1 year after loading for each system were evaluated using a paired ttest. Comparison of LBC, DC, and AIB between systems at 1 year after loading was done using analysis of covariance. The significance level was set at P≤0.05. Results: Radiographic CBLs (LBCs) were reduced at 1 year after loading compared to those at implant placement to reach statistical significance for the external connection (P= 0.000) but not the internal connection (P= 0.939). CBL changes were significantly greater for the external compared to the internal connection (P= 0.000). Similarly, the DC for the external connection was significantly greater compared to that for the internal connection (P= 0.004). Conclusion: Within the limitations of this study, the implant-abutment connection technology appears to have a significant impact on peri-implant CBLs, with the external connection paralleled by a significant reduction of CBLs.

Original languageEnglish (US)
Pages (from-to)1104-1109
Number of pages6
JournalJournal of periodontology
Volume83
Issue number9
DOIs
StatePublished - Sep 1 2012

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Dental Implants
Bone and Bones
Single-Tooth Dental Implants
Bone Remodeling
Technology

Keywords

  • Alveolar bone loss
  • Dental abutments
  • Dental implants

ASJC Scopus subject areas

  • Periodontics

Cite this

The effect of internal versus external abutment connection modes on crestal bone changes around dental implants : A radiographic analysis. / Koo, Ki Tae; Lee, Eun Jeong; Kim, Jae Yoon; Seol, Yang Jo; Han, Jung Suk; Kim, Tae Il; Lee, Yong Moo; Ku, Young; Wikesjö, Ulf M E; Rhyu, In Chul.

In: Journal of periodontology, Vol. 83, No. 9, 01.09.2012, p. 1104-1109.

Research output: Contribution to journalArticle

Koo, KT, Lee, EJ, Kim, JY, Seol, YJ, Han, JS, Kim, TI, Lee, YM, Ku, Y, Wikesjö, UME & Rhyu, IC 2012, 'The effect of internal versus external abutment connection modes on crestal bone changes around dental implants: A radiographic analysis', Journal of periodontology, vol. 83, no. 9, pp. 1104-1109. https://doi.org/10.1902/jop.2011.110456
Koo, Ki Tae ; Lee, Eun Jeong ; Kim, Jae Yoon ; Seol, Yang Jo ; Han, Jung Suk ; Kim, Tae Il ; Lee, Yong Moo ; Ku, Young ; Wikesjö, Ulf M E ; Rhyu, In Chul. / The effect of internal versus external abutment connection modes on crestal bone changes around dental implants : A radiographic analysis. In: Journal of periodontology. 2012 ; Vol. 83, No. 9. pp. 1104-1109.
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abstract = "Background: To the best of our knowledge, the influence of external versus internal implant-abutment connections on crestal bone remodeling has not been reported. The aim of the present study is to investigate the influence of the abutment connection on peri-implant crestal bone levels (CBLs) using radiographic recordings. Methods: Radiographic recordings from 40 single-tooth implants (20 external and 20 internal octagonal connections; one implant/patient) in 40 patients (15 males and 25 females; mean age: 54.3 years) were selected for analyses. The radiographic evaluation included the following: 1) linear bone change (LBC); 2) dimensional change (DC); and 3) angle between the implant and adjacent bone (AIB). Differences in LBC, DC, and AIB between implant placement and 1 year after loading for each system were evaluated using a paired ttest. Comparison of LBC, DC, and AIB between systems at 1 year after loading was done using analysis of covariance. The significance level was set at P≤0.05. Results: Radiographic CBLs (LBCs) were reduced at 1 year after loading compared to those at implant placement to reach statistical significance for the external connection (P= 0.000) but not the internal connection (P= 0.939). CBL changes were significantly greater for the external compared to the internal connection (P= 0.000). Similarly, the DC for the external connection was significantly greater compared to that for the internal connection (P= 0.004). Conclusion: Within the limitations of this study, the implant-abutment connection technology appears to have a significant impact on peri-implant CBLs, with the external connection paralleled by a significant reduction of CBLs.",
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T1 - The effect of internal versus external abutment connection modes on crestal bone changes around dental implants

T2 - A radiographic analysis

AU - Koo, Ki Tae

AU - Lee, Eun Jeong

AU - Kim, Jae Yoon

AU - Seol, Yang Jo

AU - Han, Jung Suk

AU - Kim, Tae Il

AU - Lee, Yong Moo

AU - Ku, Young

AU - Wikesjö, Ulf M E

AU - Rhyu, In Chul

PY - 2012/9/1

Y1 - 2012/9/1

N2 - Background: To the best of our knowledge, the influence of external versus internal implant-abutment connections on crestal bone remodeling has not been reported. The aim of the present study is to investigate the influence of the abutment connection on peri-implant crestal bone levels (CBLs) using radiographic recordings. Methods: Radiographic recordings from 40 single-tooth implants (20 external and 20 internal octagonal connections; one implant/patient) in 40 patients (15 males and 25 females; mean age: 54.3 years) were selected for analyses. The radiographic evaluation included the following: 1) linear bone change (LBC); 2) dimensional change (DC); and 3) angle between the implant and adjacent bone (AIB). Differences in LBC, DC, and AIB between implant placement and 1 year after loading for each system were evaluated using a paired ttest. Comparison of LBC, DC, and AIB between systems at 1 year after loading was done using analysis of covariance. The significance level was set at P≤0.05. Results: Radiographic CBLs (LBCs) were reduced at 1 year after loading compared to those at implant placement to reach statistical significance for the external connection (P= 0.000) but not the internal connection (P= 0.939). CBL changes were significantly greater for the external compared to the internal connection (P= 0.000). Similarly, the DC for the external connection was significantly greater compared to that for the internal connection (P= 0.004). Conclusion: Within the limitations of this study, the implant-abutment connection technology appears to have a significant impact on peri-implant CBLs, with the external connection paralleled by a significant reduction of CBLs.

AB - Background: To the best of our knowledge, the influence of external versus internal implant-abutment connections on crestal bone remodeling has not been reported. The aim of the present study is to investigate the influence of the abutment connection on peri-implant crestal bone levels (CBLs) using radiographic recordings. Methods: Radiographic recordings from 40 single-tooth implants (20 external and 20 internal octagonal connections; one implant/patient) in 40 patients (15 males and 25 females; mean age: 54.3 years) were selected for analyses. The radiographic evaluation included the following: 1) linear bone change (LBC); 2) dimensional change (DC); and 3) angle between the implant and adjacent bone (AIB). Differences in LBC, DC, and AIB between implant placement and 1 year after loading for each system were evaluated using a paired ttest. Comparison of LBC, DC, and AIB between systems at 1 year after loading was done using analysis of covariance. The significance level was set at P≤0.05. Results: Radiographic CBLs (LBCs) were reduced at 1 year after loading compared to those at implant placement to reach statistical significance for the external connection (P= 0.000) but not the internal connection (P= 0.939). CBL changes were significantly greater for the external compared to the internal connection (P= 0.000). Similarly, the DC for the external connection was significantly greater compared to that for the internal connection (P= 0.004). Conclusion: Within the limitations of this study, the implant-abutment connection technology appears to have a significant impact on peri-implant CBLs, with the external connection paralleled by a significant reduction of CBLs.

KW - Alveolar bone loss

KW - Dental abutments

KW - Dental implants

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