Tapered Vs Cylindrical Implant: Which Shape Inflicts Less Pain after Dental Implant Surgery? A Clinical Trial

Publication date: Available online 25 February 2019

Source: Journal of Oral and Maxillofacial Surgery

Author(s): Sahand Samieirad, Vajiheh Mianbandi, Farid Shiezadeh, Majid Hosseini-Abrishami, Elahe Tohidi

Abstract

Objective

Since no study has evaluated the post-operative pain caused by dental implants shape up to now, the aim of this study was to compare the amount of postoperative pain between tapered and cylindrical implants inserted in the posterior region of the maxilla.

Method and materials

The study was designed as a double-blind randomized clinical trial. It was implemented on 50 healthy patients with the age range of 20-60 years who were edentulous in the posterior maxilla and were candidates for single implantation. All of the patients had the same surgical difficulty with appropriate bone width and height. The BioHorizons implants (tapered or cylindrical) with 4.5 mm platform diameter were randomly selected for each group. In order to evaluate the amount of pain, "Visual Analog Scale" (VAS) was used. Pain severity in each group was measured at 30-minutes, 3-h, 6-h, 12-h and 24-h as well as 2-day, 3-day and 1-week intervals. The predictor variable was the implant shape and the outcome was postoperative pain severity. Finally, the data were statistically analyzed with SPPS 16 at the significance level of p < 0.05.

Results

50 patients (2 groups of 25 cases) with the mean age of 43.7 ± 10.9 were included in this study. It was considerable that the pain level in both groups reached its maximum at 6-h postoperative interval. The pain severity decreased significantly over time in both implant groups (P<0.001).

It was observed that the postoperative pain severity amounts in the tapered implant group at 3-, 6-, 12-h and 24-h intervals were statistically lower than those in the cylindrical group (P<0.05).

Conclusion

The implant shape had an impact on the postoperative pain. It can be concluded that the tapered implants lead to less post-operative pain compared to cylindrical ones.

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