NCT03471000

The Influence of the Crown-implant Ratio on the Crestal Bone Level and Implant Secondary Stability

The Influence of the Crown-implant Ratio on the Crestal Bone Level and Implant Secondary Stability - 36 Months Clinical Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (actual)
• Sponsor: Jakub Hadzik · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The aim of the study was to determine whether implant length and the crown-to-implant (C/I) ratio influence implant stability and the loss of the surrounding marginal bone, and whether short implants can be used instead of sinus augmentation procedures.

Detailed description

The patients participating in the study (n=30) had one single tooth implant - a short (OsseoSpeed™ L6Ø4 mm, Implants) or a regular implant (OsseoSpeed™ L11 and L13Ø4 mm, DENTSPLY Implants) - placed in the maxilla. The evaluation was based on clinical and radiological examination. The crown-to-implant ratio was determined by dividing the length of the crown together with the abutment by the length of the implant placed crestally. Mean crown-to-implant ratios were calculated separately for each group and its correlation with the MBL (marginal bone loss) and stability was assessed. The authors compared the correlation between the C/I ratio values, MBL and secondary implant stability.

Conditions

• Partial Edentulism
• Tooth Loss

Interventions

Type	Name	Description
OTHER	Short implants Treatment	Short implants are placed in the alveolar bone and a clinical Ostell and Periotest evaluation of the implants after a period of time is done. Analysis of periapical radiographs and CBCT images after a period of time. Bone around the implant was measured, marginal bone level loss is determined.
OTHER	Regular implants Treatment	Sinus lift procedure is done and regular implants are placed in the alveolar bone and a clinical Ostell and Periotest evaluation of the implants after a period of time is done. Analysis of periapical radiographs and CBCT images after a period of time. Bone around the implant was measured, marginal bone level loss is determined.

Timeline

• Start date: 2012-01-01
• Primary completion: 2016-01-01
• Completion: 2016-01-01
• First posted: 2018-03-20
• Last updated: 2020-01-14