Influence of implant-abutment connection structure on peri-implant bone level in a second molar: A 1-year randomized controlled trial

Jin Cheol Kim, Jungwon Lee, Sungtae Kim, Ki Tae Koo, Hae-Young Kim, In Sung Luke Yeo

Research output: Contribution to journalArticle

Abstract

PURPOSE. This study aimed to evaluate the effect of two different implant-abutment connection structures with identical implant design on peri-implant bone level. MATERIALS AND METHODS. This clinical study was a patient-blind randomized controlled trial following the CONSORT 2010 checklists. This trial was conducted in 24 patients recruited between March 2013 and July 2015. Implants with internal friction connection were compared to those with external hex connection. One implant for each patient was installed, replacing the second molar. Implant-supported crowns were delivered at four months after implant insertion. Standardized periapical radiographs were taken at prosthesis delivery (baseline), and one year after delivery. On the radiographs, distance from implant shoulder to first bone-to-implant contact (DIB) and peri-implant area were measured, which were the primary and secondary outcome, respectively. RESULTS. Eleven external and eleven internal implants were analyzed. Mean changes of DIB from baseline to 1-year postloading were 0.59 (0.95) mm for the external and 0.01 (0.68) mm for the internal connection. Although no significant differences were found between the two groups, medium effect size was found in DIB between the connections (Cohen's d = 0.67). CONCLUSION. Considering the effect size in DIB, this study suggested the possibility of the internal friction connection structure for more effective preservation of marginal bone.

Original languageEnglish
Pages (from-to)147-154
Number of pages8
JournalJournal of Advanced Prosthodontics
Volume11
Issue number3
DOIs
Publication statusPublished - 2019 Jan 1

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Randomized Controlled Trials
Friction
Bone and Bones
Crowns
Checklist
Prostheses and Implants
Clinical Studies

Keywords

  • Alveolar bone loss
  • Dental implant-abutment design
  • Randomized controlled trial

ASJC Scopus subject areas

  • Oral Surgery
  • Dentistry (miscellaneous)

Cite this

Influence of implant-abutment connection structure on peri-implant bone level in a second molar : A 1-year randomized controlled trial. / Kim, Jin Cheol; Lee, Jungwon; Kim, Sungtae; Koo, Ki Tae; Kim, Hae-Young; Yeo, In Sung Luke.

In: Journal of Advanced Prosthodontics, Vol. 11, No. 3, 01.01.2019, p. 147-154.

Research output: Contribution to journalArticle

Kim, Jin Cheol ; Lee, Jungwon ; Kim, Sungtae ; Koo, Ki Tae ; Kim, Hae-Young ; Yeo, In Sung Luke. / Influence of implant-abutment connection structure on peri-implant bone level in a second molar : A 1-year randomized controlled trial. In: Journal of Advanced Prosthodontics. 2019 ; Vol. 11, No. 3. pp. 147-154.
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