Occlusal Morphology of Mandibular First Primary Molars in a Sample of Egyptian Children: A Cross-Sectional Study | ||||
| MSA Dental Journal | ||||
| Volume 4, Issue 3, July 2025, Page 16-22 PDF (643.28 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/msadj.2025.374637.1051 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Samah Mohamed Kamel   1; Lougine Elkhousht2; Areej Othman3; Hanin Ahmed4; Marian Essam5; Nanis Nasser5; Yasmine Hossam5
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| 1Oral Biology department, MSA University | ||||
| 2Oral Biology , MSA | ||||
| 3MSc student MSA | ||||
| 4MSc Student , MSA | ||||
| 5Pedo, MSA | ||||
| Abstract | ||||
| Background: The occlusal morphology of primary teeth plays a crucial role in dental development, masticatory function, and long-term occlusal stability. Despite extensive documentation of morphological variations across populations, limited data exist on Egyptian children. This study aimed to investigate the occlusal morphological features of mandibular first primary molars in a sample of Egyptian children, addressing a critical gap in anthropological and clinical dental research. Methods: A cross-sectional study was conducted on 150 dental casts obtained from Egyptian children visiting the clinics of …… university. Standardized alginate impressions were poured in Type III dental stone and evaluated by three calibrated examiners. Key occlusal features: cusp number, groove configuration (Y-shaped or H-shaped), and outline morphology (oval, rhomboidal, or heart-shaped) were assessed. Statistical analysis was performed using SPSS 20®, with frequency distributions and chi-square tests for comparisons. Results: The most prevalent morphology was a 3-cusp arrangement with Y-shaped grooves (40.0%), followed by 4-cusps with H-shaped grooves (33.3%). Oval occlusal outlines predominated (50.0%), with rhomboidal (33.3%) and heart-shaped (16.7%) forms being less common. Significant differences were observed between occlusal outline shapes (p < 0.0001). The findings align partially with global trends but reveal distinct population-specific patterns, particularly the high prevalence of Y-shaped grooves and oval outlines. Conclusion: This study provides the first comprehensive analysis of mandibular first primary molar morphology in a sample of Egyptian children, highlighting unique traits with implications for clinical dentistry and anthropological research. The results underscore the importance of population-specific dental standards . | ||||
| Keywords | ||||
| Primary first molar morphology; Occlusal groove patterns; Cusp configuration; Egyptian children; Population-specific traits | ||||
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