Journal of Kerman University of Medical Sciences

Radiographic Assessment of the Association Between Primary Molar Pulp Treatment and Permanent Premolar Eruption in 10-12-Year-Old Children: A Retrospective Cross-Sectional Study

Articles in Press

Document Type : Original Article

Authors

Fatemeh Sadat Sajadi 1
Zahra Salari 1
Reyhaneh Aftabi 1
Mohammad Karami Nedik 2
Abolfazl Shiri 3

1 Kerman Oral and Dental Diseases Research Centre, Department of Pediatric Dentistry, Kerman University of Medical Sciences, Kerman, Iran

2 Kerman University of Medical Sciences, Kerman, Iran

3 Oral and Dental Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran

Abstract
Introduction: Tooth eruption is a multifactorial physiological process affected by both local and systemic conditions. This study used panoramic radiographs to investigate the relationship between pulp treatment of primary molars and eruption of the permanent premolars in children aged 10-12 years in Kerman, Iran.
Methods: In this retrospective cross-sectional study, 47 panoramic radiographs from children aged 10-12 years were examined. Each radiograph included a primary molar that had received pulp treatment in one quadrant, while the corresponding contralateral quadrant served as the control. On each side, the distance from the cusp tip of the developing permanent premolar to the alveolar crest was measured using AutoCAD and compared between treated and control sites. Data were analyzed with SPSS version 26 using the paired-samples t-test, Wilcoxon signed-rank test, chi-square test, Fisher’s exact test, and multivariable linear regression. Statistical significance was set at p < 0.05.
Results: The permanent tooth bud was positioned closer to the alveolar crest on the treated side than on the control side. The mean difference in distance between treated and control sides was 0.45 mm when all teeth were considered, compared with 0.30 mm among successfully treated teeth and 0.62 mm among unsuccessfully treated teeth. No significant association was found between the measured distance and tooth type, jaw, or side of treatment.
Conclusion: The distance between the permanent tooth bud and the alveolar crest was significantly reduced on the treated side compared with the control side. This finding may indicate an association between pulp treatment of primary molars and earlier eruption of the corresponding permanent premolars.

Highlights

Fatemeh Sadat Sajadi (Google Scholar) ( PubMed)

 Zahra Salari (Google Scholar) ( PubMed)

Reyhaneh Aftabi (Google Scholar) ( PubMed)

Mohammad Karami Nedik (Google Scholar) ( PubMed)

Abolfazl Shiri (Google Scholar) ( PubMed)

 

Keywords

Tooth Eruption
Bicuspid
Radiography, Panoramic
Cross-Sectional Studies
Retrospective Studies
Child
Subjects
Journal of Kerman University of Medical Sciences

Articles in Press, Accepted Manuscript
Available Online from 01 November 2026

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