Relationship between anterior guidance and anatomical formation of the lateral teeth
Dr n. med. Anna Kropiwnicka1, Dr n. med. Piotr Jacuński1, Dr n. med. Marcin Chorzewski1, Prof. Teresa Sierpińska2
1 Department of Dental Techniques Medical University of Bialystok,
2 Department of Prosthodonthics Medical University of Bialystok
Objectives
The aim of the study was to determine relations between the morphology of the posterior teeth occlusal surface and anterior controlling factors in young adults with full natural dentition
Materials and Methods
MATERIAL: The research was carried out on plaster models obtained from diagnostic impressions of 50 people aged 18-21 with full natural dentition (Angle’s class I).
METHODS: Plaster models were scanned with the Zirkonzahn S600 ARTI optical scanner. The premolars and molars were dimensioned using the Exocad software. All precise measurements of the anatomical details of the occlusal surfaces were made on virtual models. The overbite and overjet of the central incisors were also measured.
The data were analyzed statistically. The normality of variable distributions was assessed using the Shapiro-Wilk test. Correlations between variables were evaluated using the Spearman rank correlation coefficient. Statistical significance was considered at the level of p<0.05. Calculations were performer using the Statistica 13.3 package from TIBCO.
Results
A statistically significant negative correlation was found between the overbite and the distal angle of the slopes of the distal buccal cusps for the second superior molar (R = - 338892 and p = 0.016065). There is also a statistically significant positive correlation between the overjet and the distance between the tops of the mesial and palatal buccal cusps for the second upper molar (R = 0.398537 and p = 0.004149).
Conclusions
Morphology of the second superior molar occlusal surface is significantly related to the measurement of the overbite and overjet.