*Address for Correspondence: Dr. Rucha Karavade, Department of Orthodontics, Rangoonwala Dental College, Pune, Maharashtra, India. E-mail: rucha.karavade@gmail.com
To determine the co-relationships of the root crown length and occlusal contacts in patients with Class-III skeletal relationship, anterior open-bite, and high mandibular plane angle.
Study group consisted of 10 untreated Class-III patients with reverse over jet of minimum-2 or more and an anterior open-bite. Control group consisted of untreated patients with average 0–4 mm of over jet and overbite. Dental casts, orthopantomograms, and lateral cephalograms were recorded for measuring the root and crown lengths, occlusal contacts, and mandibular plane angle readings and were analyzed.
The root length and the root-crown ratios were reduced from incisors toward the pre-molars in the study group. Occlusal hypofunction was seen associated with the study group. Short dental roots were observed specifically with the anteriors.
Patients with Class-III skeletal relationship, high mandibular plane angle, and an anterior open-bite have a tendency toward developing short dental roots that can be associated with occlusal hypofunction that is associated with the condition.
Anomaly, malocclusion, mandibular plane angle, open bite
