The effect of the RW-splint on the position and occlusal relationship of class Ⅱ malocclusion patients with temporomandibular disorder
10.12016/j.issn.2096-1456.2020.04.004
- Author:
LIU Junfeng
1
,
2
;
LIU Conghua
1
;
ZHANG Wenzhong
1
;
XIAO Hui
1
;
Li Shaobing
3
Author Information
1. Department of Orthodontics, Stomatological Hospital, Southern Medical University
2. Department of Stomatology, The First People′s Hospital of Kashi Region
3. Department of Implant, Stomatological Hospital, Southern Medical University
- Publication Type:Journal Article
- Keywords:
RW-splint;
temporomandibular disorder;
jaw position;
Angle class Ⅱ;
occlusal relation;
orthodontic repair;
temporomandibular joint pain;
functional displacement
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2020;28(4):224-230
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the effect of RW splints on the position and occlusal relationship of classⅡ malocclusion patients with temporomandibular disorder (TMD) to provide a basis for the diagnosis and design of this kind of patient.
Methods :Fifteen patients with class Ⅱ malocclusions with TMD were enrolled in this study. After 8 months of RW-splint treatment, the changes in jaw position (∠ANB, SN-MP, ∠S-G0/N-Me) and occlusal relationship (molar, cuspid teeth displacement and anterior overbite/overjet value) were recorded by a condylar displacement measuring instrument at the CR position and CO position.
Results:After RW-splint treatment, the mean values of ∠ANB (t=4.971, P=0.001) and ∠SN-MP (t=9.895, P ＜ 0.01) were increased in all 15 patients, and the mean value of S-G0/N-Me (t=5.342, P=0.005) was decreased. The mean values of the distal movement of the first molars on the left and right sides of the mandible were (1.57 ± 0.79) mm and (1.69 ± 1.29) mm, respectively; the mean values of the distal movement of the canines on the left and right sides of the mandible were (1.54 ± 0.50) mm and (1.51 ± 1.08) mm, respectively; and the mean values of the overbite were (1.16 ± 0.60) mm and (1.99 ± 0.85) mm, respectively.
Conclusion: After RW-splint treatment, the jaw rotates clockwise, and the relationship between the molars and canines changes obviously in class Ⅱ patients with TMD, which provides a reference for the diagnosis and treatment plan of this kind of patient.
- Full text:RW牙合板对伴颞下颌关节紊乱病的安氏Ⅱ类错牙合患者颌位及咬合关系的影响.pdf
