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Single-tooth implants with different neck designs: a randomized clinical trial evaluating the aesthetic outcome
Laurens den Hartog1, Gerry M Raghoebar, James J Huddleston Slater
1Department of Oral and Maxillofacial Surgery, University Medical Center Groningen and University of Groningen, Groningen, the Netherlands. l.den.hartog@kchir.umcg.nl
Clinical Implant Dentistry and Related Research
|August 6, 2011
Summary
Single-tooth implant aesthetics in the smile zone are not affected by neck design. However, pre-implant surgery may impact mucosal aesthetics, influencing overall patient satisfaction with dental implants.
Area of Science:
- Dental Implantology
- Aesthetic Dentistry
- Prosthodontics
Background:
- Aesthetic outcomes of single-tooth replacements are crucial for patient satisfaction.
- Different implant neck designs are proposed to improve soft tissue integration and aesthetics.
- Evaluating both professional and patient perspectives is essential for comprehensive aesthetic assessment.
Purpose of the Study:
- To compare the aesthetic results of single-tooth implants with smooth, grooved rough, or scalloped rough neck designs.
- To assess aesthetic outcomes from both dental professional and patient viewpoints.
- To investigate the influence of implant neck design on marginal bone levels and aesthetic perception.
Main Methods:
- A randomized controlled trial involving 93 patients with maxillary anterior tooth loss.
- Comparison of three implant neck designs: smooth, rough with grooves, and scalloped rough with grooves.
- Aesthetic evaluation using pink esthetic score/white esthetic score (PES/WES) and implant crown aesthetic index (ICAI), alongside patient questionnaires and radiographic analysis of bone levels.
Main Results:
- No significant differences in aesthetic outcomes were observed between the different implant neck designs.
- Significant differences in marginal bone loss were noted, with the scalloped neck showing the most bone loss.
- High patient satisfaction was reported for both crown (93.3%) and mucosal (81.5%) aesthetics, irrespective of neck design.
Conclusions:
- The aesthetic outcome of single-tooth implants in the aesthetic zone is not dependent on the implant neck design.
- The need for pre-implant augmentation surgery may negatively influence mucosal aesthetics.
- Focusing on factors beyond neck design, such as surgical planning, is important for optimizing implant aesthetics.