Effect of Nail Biting Habit on Mandibular Bone Structure: A Retrospective Radiological Study | NCT07740889

NCT07740889

Overview

NCT ID: NCT07740889
Lead Sponsor: Recep Tayyip Erdogan University Training and Research HospitalOTHER
Official Title: Evaluation of the Effects of Nail Biting Habit on Mandibular Bone Structure Using Fractal Analysis and Panoramic Morphometric Indices: A Retrospective Radiological Study
Brief Summary: Nail biting (onychophagia) is a common parafunctional habit characterized by repetitive and non-functional biting behavior. Although the effects of nail biting on dental structures and occlusion have been reported, its potential effects on mandibular bone structure remain unclear. This retrospective radiological study aims to evaluate the association between nail biting habit and mandibular bone characteristics using fractal analysis and panoramic morphometric indices. Existing panoramic radiographs of individuals with and without nail biting habits will be retrospectively analyzed. Trabecular bone complexity, mandibular cortical width, panoramic mandibular index, and Klemetti index values will be compared between groups to investigate whether nail biting habit is associated with alterations in mandibular bone morphology.
Conditions

Status and Timeline

Status: Not yet recruiting
Last Update Posted: Aug 3, 2026Actual
Start Date: Jul 27, 2026Estimated
Primary Completion Date: Aug 5, 2026Estimated
Completion Date

Participation Criteria

Ages Eligible for Study: Child (0-17)
Sexes Eligible for Study: All
Accepts Healthy Volunteers?: Yes
Eligibility Criteria: Inclusion Criteria:

Children aged 8-10 years who were examined at the Department of Pediatric Dentistry, Faculty of Dentistry, Recep Tayyip Erdoğan University.

Systemically healthy participants.

Participants with available diagnostic-quality panoramic radiographs obtained during routine dental examinations.

Participants with and without a history of nail biting habit.

Panoramic radiographs with sufficient image quality for fractal dimension analysis and mandibular morphometric measurements.

Radiographs without periapical pathology in teeth adjacent to the regions of interest (ROI) used for fractal analysis.

Participants with at least 20 existing teeth.

Radiographic records with available parental radiographic information and consent documentation.

Exclusion Criteria:

Participants with systemic diseases or conditions that may affect bone metabolism, including diabetes mellitus, osteoporosis, osteomalacia, renal diseases, hypothyroidism, or hyperparathyroidism.

Participants using medications that may influence bone density or bone metabolism.

Participants with temporomandibular joint disorders affecting the subcondylar region.

Participants with mandibular pathological conditions, including cysts, tumors, or other lesions affecting mandibular bone structure.

Participants with periapical pathology adjacent to the regions selected for fractal analysis.

Participants with fewer than 20 teeth.

Panoramic radiographs with insufficient diagnostic quality or image artifacts that prevent reliable measurements.

Radiographs that do not allow accurate evaluation of mandibular cortical and trabecular bone parameters.

Study Plan

Study Type: Observational
Phase: No data available
Enrollment: 100Estimated
Primary Purpose: No data available
Allocation: No data available
Interventional Model: No data available
Masking: No data available

Contacts and Locations

Central Contacts: Dilara Nil GÜNAÇARContact
dilaranil.tomrukcu@erdogan.edu.tr+905412940104

Similar Studies

Participant Group/Arms

Nail Biting Habit Group

This cohort includes systemically healthy children aged 8-10 years with a documented nail biting habit. Existing panoramic radiographs obtained during routine dental examinations will be retrospectively analyzed. Mandibular trabecular bone structure will be evaluated using fractal dimension analysis, and cortical bone characteristics will be assessed using mandibular cortical width, panoramic mandibular index, and Klemetti index measurements. No intervention will be performed.

Control Group Without Nail Biting Habit

This cohort includes systemically healthy children aged 8-10 years without a history of nail biting habit. Existing panoramic radiographs obtained during routine dental examinations will be retrospectively analyzed using the same radiological evaluation methods. Mandibular trabecular and cortical bone characteristics will be compared with those of the nail biting habit group. No intervention will be performed.