Titirat Chutchalermpan1, Jittima Pumklin2, Thosapol Piyapattamin3. 1. Ban Na Hospital, Amphoe Banna, Nakhon Nayok, Thailand. 2. Department of Restorative Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand. 3. Department of Preventive Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand.
Abstract
OBJECTIVE: The main purpose of this article is to evaluate the disclusion time (DT) in the lateral excursions and protrusion among subjects with Angle's malocclusions using a T-Scan III system. MATERIALS AND METHODS: One hundred subjects with malocclusions were divided into Class I, Class II division 1, Class II division 2, and Class III (n = 25 per group). All groups' DT of each excursion was evaluated by a T-Scan III system. STATISTICAL ANALYSIS: One-way analysis of variance, followed by a post hoc test, was used to analyze the numerical data at p < 0.05. RESULTS: In the respective malocclusions, means ± standard deviations in second(s) of the DT were 2.08 ± 0.65, 2.13 ± 0.74, 2.12 ± 0.72, and 3.19 ± 1.34 during left excursion; 2.15 ± 0.94, 2.58 ± 1.16, 2.37 ± 1.07, and 3.28 ± 1.25 during right excursion; and 1.88 ± 0.99, 2.08 ± 1.11, 2.07 ± 0.68, and 3.01 ± 1.53 during protrusion. When compared to Class I and Class II malocclusions, Class III showed a significantly higher mean DT of each excursion (p < 0.05). CONCLUSION: Class III had the significantly highest mean DT of each excursion and the significantly longest DT in all excursions. Dental Investigation Society.
OBJECTIVE: The main purpose of this article is to evaluate the disclusion time (DT) in the lateral excursions and protrusion among subjects with Angle's malocclusions using a T-Scan III system. MATERIALS AND METHODS: One hundred subjects with malocclusions were divided into Class I, Class II division 1, Class II division 2, and Class III (n = 25 per group). All groups' DT of each excursion was evaluated by a T-Scan III system. STATISTICAL ANALYSIS: One-way analysis of variance, followed by a post hoc test, was used to analyze the numerical data at p < 0.05. RESULTS: In the respective malocclusions, means ± standard deviations in second(s) of the DT were 2.08 ± 0.65, 2.13 ± 0.74, 2.12 ± 0.72, and 3.19 ± 1.34 during left excursion; 2.15 ± 0.94, 2.58 ± 1.16, 2.37 ± 1.07, and 3.28 ± 1.25 during right excursion; and 1.88 ± 0.99, 2.08 ± 1.11, 2.07 ± 0.68, and 3.01 ± 1.53 during protrusion. When compared to Class I and Class II malocclusions, Class III showed a significantly higher mean DT of each excursion (p < 0.05). CONCLUSION: Class III had the significantly highest mean DT of each excursion and the significantly longest DT in all excursions. Dental Investigation Society.