Related Experiment Video
Updated: Jul 15, 2026
Multimodal Approach to Assess Bone Regeneration and Scaffold Performance
Published on: February 13, 2026
Effect of microthread on the maintenance of marginal bone level: a 3-year prospective study
Dong-Won Lee1, Young-Shill Choi, Kwang-Ho Park
1Department of Periodontology, Yongdong Severance Hospital, College of Dentistry, Yonsei University, Seoul, Korea.
Objectives:
The purpose of the present study was to evaluate the long-term effect of the microthread on the maintenance of marginal bone level.
Material And Methods:
Seventeen patients were selected and two types of Astra Tech implants were installed, with the Microthread on the coronal portion of the fixture [Astra Tech Single Tooth Implant (ST)] or without the Microthread [Astra Tech TiOblast Implant (TB)]. ST and TB were installed adjacent to each other within the same partially edentulous sites and marginal bone loss was evaluated by radiographic image. The marginal bone-level alteration of the each fixture after prosthesis insertion was analyzed.
Results:
The marginal bone loss of ST and TB differed significantly during the observation period (P<0.01). Marginal bone levels of both ST and TB were stabilized after 1 year of lading.
Conclusions:
The Microthread might have an effect in maintaining the marginal bone loss against loading.
