A Cross-sectional Radiographic Study on the Effect of Vertical Malocclusions on Root Crown Ratio of Maxillary Teeth

The loss of apical root tissue induced by a decrease in the root-to-crown ratio is known as root resorption. It usually spreads from the external surface to the pulp chamber if not caught early. In the absence of pathology, a number of natural factors put roots at risk of resorption. The orthodontist will be aided in treatment by knowing the pressure or aetiology of resorption. There is a paucity of literature on root resorption caused by various malocclusions in the Indian population.

Using two alternative radiographic techniques, examine and validate the root crown ratios of maxillary incisors with vertical malocclusions and detrimental habits.

Materials and Methods: Ninety orthodontic patients were divided into three groups based on how they chewed their nails: open bite, deep bite, and control. Panorama radiographs and Periapical radiographs (by paralleling technique) were taken and traced for maxillary incisors (360 teeth). The lengths of the roots and crowns were measured, the root crown ratios calculated, and the results were converted to statistics using SPSS.

Results: A study of Root-crown ratios in vertical malocclusions in panoramic and periapical radiographs indicated statistically significant (P 0.001) differences in the Open bite group for all maxillary incisors. There were no statistically significant differences in the deep bite group. A relationship between nail biting and the root-crown ratio has been discovered. It was discovered that there was no gender preference.

In open bite patients, root-to-crown ratios were found to be lower. Patients who bite their nails experience substantial root resorption. The paralleling approach can be used to assess root resorption on both panoramic and periapical radiographs.

Author (S) Details

G. V. D. Harsha

Department of Orthodontics and Dentofacial Orthopedics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

C. V. Padmapriya

Department of Orthodontics and Dentofacial Orthopedics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Siva Kumar Arunachalam

Department of Community and Children’s Oral Health Care, International Medical University, Kuala Lampur, Malaysia.

D. P. K. Varma

Department of Orthodontics and Dentofacial Orthopedics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

Goutham Chakravarthy Vegesna

Department of Orthodontics and Dentofacial Orthopedics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

R. S. Usha Sree

Department of Orthodontics and Dentofacial Orthopedics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.

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