CC BY-NC-ND 4.0 · Eur J Dent 2019; 13(04): 510-513
DOI: 10.1055/s-0039-1696896
Original Article
Dental Investigation Society

Evaluation of Disclusion Time in Various Angle’s Malocclusions by T-Scan III System

Titirat Chutchalermpan
1  Ban Na Hospital, Amphoe Banna, Nakhon Nayok, Thailand
Jittima Pumklin
2  Department of Restorative Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand
Thosapol Piyapattamin
3  Department of Preventive Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand
› Author Affiliations
Funding This study was supported by The Research Funds for Graduate Students from Faculty of Dentistry, Naresuan University.
Further Information

Publication History

Publication Date:
03 December 2019 (online)



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.