Title
Assessment of narrow-diameter implant survival for single-crown rehabilitation in the molar area
Authors
Alisha Singh1, Priyadershini A Rangari2, Ranjeet Kumar Chaudhary3, Neelam Singh3,*, Kamal Nayan4 & Udaybhan Singh5
Affiliation
1Department of Dentistry, ESIC Medical College and Hospital, Indore, Madhya Pradesh, India; 2Department of Dentistry, Nandkumar Singh Chouhan Government Medical College, Khandwa, Madhya Pradesh, India; 3Department of Dentistry, Shri Krishna Medical College Hospital, Muzaffarpur, Bihar, India; 4Department of Prosthodontics and Crown and Bridge, IDST Dental College, Kadrabad, Modinagar, Ghaziabad, Uttar Pradesh, India; 5Department of Oral & Maxillofacial Surgery, R. R. Dental College & Hospital, Udaipur, Rajasthan, India; *Corresponding author
Alisha Singh - E-mail: alishasingh24@yahoo.com
Priyadershini A Rangari - E-mail: panhealth121013@gmail.com
Ranjeet Kumar - E-mail: ranjeet_chaudhary2000@yahoo.com
Neelam Singh - E-mail: neelam.kgdu@gmail.com
Kamal Nayan - E-mail: kamalnayan60@gmail.com
Udaybhan Singh - E-mail: udaybhansingh20021987@gmail.com
Article Type
Research Article
Date
Received April 1, 2026; Revised April 30, 2026; Accepted April 30, 2026, Published April 30, 2026
Abstract
Literature lacks substantial data on survival rates of narrow-diameter dental implants (<3.75 mm) supporting single crowns in posterior molar regions under high masticatory loads. This randomized study compared clinical outcomes in 80 adults receiving narrow-diameter (n=40) versus standard-diameter (≥3.75 mm, n=40) implants for single molar crowns, assessing BOP, PD, mobility and crestal bone levels at 6 and 12 months. Narrow implants showed significantly less crestal bone loss at 6 months (p=0.001) and 12 months (p<0.001) than standard implants; BOP was lower in the narrow group at 3/6 months (p=0.01), though not significant at study end (p=0.42). PD increase was higher in narrow implants at 6/12 months (p<0.001), but implant mobility remained comparable between groups. Thus, we show by confirming equivalent 1-year success of narrow-diameter implants in molars, expanding minimally invasive options for compromised ridges despite limited prior evidence.
Keywords
Molar region, narrow alveolar ridges, narrow-diameter implants (NDI), standard diameter implants (SDI)
Citation
Singh et al. Bioinformation 22(4): 2201-2205 (2026)
Edited by
Vini Mehta
ISSN
0973-2063
Publisher
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.
