IADR Abstract Archives
correlation between maxillary and mandibular base lengths with anterior crowding in class II malocclusion.
Objectives: The objectives of this study wass to determine the correlation between maxillary and mandibular base lengths with anterior crowding in class II malocclusion.
Methods: Study design: Cross sectional
Study duration: 1st July 2021 to 30th September 2022
Study setting: department of Orthodontics, Fatima memorial Hospital, Lahore
Material and methods: A total of 70 participants with chronological age 13-30 years, presence of all permanent teeth up to first molar, absence of impacted and supernumerary teeth, no previous orthodontic treatment history and patient having skeletal class II malocclusion were included. Cases with open bite and cross bites cases, significant dental anomalies of number, size and form, oral habits like lip sucking and thumb sucking and craniofacial syndromes and facial asymmetries were excluded. skeletal parameters SNA, SNB, ANB, and Wits value was measured for skeletal class II pattern. The skeletal linear measurements Co-A and Co-Gn was measured for skeletal base lengths digitally with interpolation of 0. 5mm.Maxillary and mandibular crowding was calculated as difference of arch perimeter and sum of tooth widths mesial to 1st molars on both sides in millimeters by single examiner. Correlation between crowding and base length was assessed by using Pearson’s product moment correlation.
Results: Results: The females were 33 (47.14%) and males were 37 (52.86%). The mean age of the participants were 21.66±4.81 years. Statistically significant, moderate and negative correlation was found between maxillary base length and maxillary crowding (r=-0.44, P<0.001). Similarly statistically significant, moderate and negative correlation was found between mandibular base length and maxillary crowding (r=-0.31, P=0.008).
Conclusions: Conclusion: Statistically significant, moderate and negative correlation was found between skeletal base lengths and dental arches crowding.
Keywords: maxillary, mandibular, base length, crowding
Methods: Study design: Cross sectional
Study duration: 1st July 2021 to 30th September 2022
Study setting: department of Orthodontics, Fatima memorial Hospital, Lahore
Material and methods: A total of 70 participants with chronological age 13-30 years, presence of all permanent teeth up to first molar, absence of impacted and supernumerary teeth, no previous orthodontic treatment history and patient having skeletal class II malocclusion were included. Cases with open bite and cross bites cases, significant dental anomalies of number, size and form, oral habits like lip sucking and thumb sucking and craniofacial syndromes and facial asymmetries were excluded. skeletal parameters SNA, SNB, ANB, and Wits value was measured for skeletal class II pattern. The skeletal linear measurements Co-A and Co-Gn was measured for skeletal base lengths digitally with interpolation of 0. 5mm.Maxillary and mandibular crowding was calculated as difference of arch perimeter and sum of tooth widths mesial to 1st molars on both sides in millimeters by single examiner. Correlation between crowding and base length was assessed by using Pearson’s product moment correlation.
Results: Results: The females were 33 (47.14%) and males were 37 (52.86%). The mean age of the participants were 21.66±4.81 years. Statistically significant, moderate and negative correlation was found between maxillary base length and maxillary crowding (r=-0.44, P<0.001). Similarly statistically significant, moderate and negative correlation was found between mandibular base length and maxillary crowding (r=-0.31, P=0.008).
Conclusions: Conclusion: Statistically significant, moderate and negative correlation was found between skeletal base lengths and dental arches crowding.
Keywords: maxillary, mandibular, base length, crowding