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Randomized controlled clinical trial comparing two dental implants with different neck configurations.

Ignacio Sanz-Martín¹, Ignacio Sanz-Sánchez¹, Fernando Noguerol¹

¹Section of Post-graduate Periodontology, Faculty of Odontology, University Complutense of Madrid, Spain.

Clinical Implant Dentistry and Related Research

|March 7, 2017

Summary

Dental implant neck design impacts bone levels. This study found both one-piece and two-piece implants showed similar bone changes and clinical outcomes after 12 months, indicating high survival rates for both designs.

Keywords:

controlled clinical trial dental implants machined collar platform switching

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Area of Science:

Dental Implantology
Biomaterials Science
Oral Surgery

Background:

Peri-implant bone levels are influenced by implant neck macro-design and implant-abutment connections.
Understanding these factors is crucial for long-term dental implant success.

Purpose of the Study:

To compare soft and hard tissue changes between a one-piece implant with a machined collar (TG) and a two-piece implant with platform switching (SP).

Main Methods:

A randomized controlled trial involving partially edentulous patients receiving dental implants in the posterior maxilla or mandible.
Radiographic assessment of interproximal bone levels at implant loading and 1-year postloading.
Clinical, patient-reported outcomes, and adverse events were evaluated over 12 months postloading.

Main Results:

While initial bone resorption was greater in the SP group, the TG group showed significantly more bone loss from loading to the final visit.
At 24 months post-surgery, no significant differences in bone levels were observed between the TG and SP groups.
Secondary outcomes, including clinical parameters and patient-related measures, also showed no significant differences between the implant types.

Conclusions:

Both one-piece (TG) and two-piece (SP) dental implants demonstrate high survival rates.
Similar bone level changes, clinical parameters, and patient-related outcomes were observed for both implant types after 12 months of loading.