Title

Effect of implant angulation and impression technique on Nobel active implant impressions: An original study

Authors

G.S. Prasanthi^1,*, Uppala Sushma², Tikkisetty Chaitanya Jyothi², Varchaswi Vellanki², Raguri Manaswi² & Neha Agrawal³

Affiliation

¹Department of Prosthodontics and Implantology, Sibar Institute of Dental Sciences, Takkelapadu, Guntur andhra Pradesh, India; ²Department of Conservative and Endodontics, Sibar Institute of Dental Sciences, Takkelapadu, Guntur andhra Pradesh, India; ³Department of Biochemistry, Index Medical College Hospital and Research Center, Indore, India; *Corresponding author

Email

GS Prasanthi - E-mail: prashanti13143@gmail.com
Uppala Sushma - E-mail: sushmasobhan@gmail.com
Tikkisetty Chaitanya Jyothi - E-mail: tikkisettychaitanyajyothi@gmail.com
Varchaswi Vellanki - E-mail: Varchuvellanki@gmail.com
Raguri Manaswi - E-mail: ragurimanaswi@gmail.com
Neha Agrawal - E-mail: Neha.intel@gmail.com

Article Type

Research Article

Date

Received May 31, 2025; Revised May 31, 2025; Accepted May 31, 2025, Published May 31, 2025

Abstract

Accurate implant impressions are essential for the success and longevity of implant-supported prostheses. The Nobel Active system has a tapered body and aggressive thread design, demanding high precision. Therefore, it is of interest to compare open-tray and closed-tray techniques for impression accuracy. Implants were placed at 0°, 15°, and 25° angulations for evaluation. A Coordinate Measuring Machine was used for 3D deviation measurements. At 0°, both techniques showed negligible differences in accuracy. At 15° and 25°, the open-tray technique had significantly better accuracy (p < 0.05). Impression errors increased with implant angulation, mainly in closed-tray groups. Angulated implants posed greater challenges for accurate impressions. Thus, we show the role of angulation in impression precision. Open-tray techniques are preferred in angulated Nobel Active implant cases. This approach enhances prosthetic fit and improves clinical outcomes.

Keywords

Nobel active implants, impression techniques, open-tray, closed-tray, implant angulation, impression accuracy, coordinate measuring machine, prosthetic fit, implant-supported restoration

Citation

Prasanthi et al. Bioinformation 21(5): 1191-1194 (2025)

Edited by

Neelam Goyal & Shruti Dabi

ISSN

0973-2063

Publisher

Biomedical Informatics

License

This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.