Ruttitivapanich Nitikarn, Tansalarak Ratchawan, Palasuk Jadesada, Pumklin Jittima
Section of Orthodontics, Department of Preventive Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand.
Department of Preventive Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok, Thailand.
Eur J Dent. 2019 Jul;13(3):330-334. doi: 10.1055/s-0039-1693755. Epub 2019 Sep 20.
The main purpose of this article was to determine the correlation of bite force in maximal intercuspal position (MIP) among patient's perceptions, clinician subjective interpretation, and T-Scan III system.
Forty-three dental students at Naresuan University (Phitsanulok, Thailand) participated in the study. Subjects were positioned by Frankfurt horizontal plane paralleled to the horizontal plane and asked to bilaterally clenched in MIP. Patient's perception was evaluated by asking which side of the jaw had heavier bite force (right, left, or equally on both sides). Then, the clinician subjective interpretation was assessed using traditional occlusal indicators. Furthermore, patient's bite force was analyzed using T-Scan III.
Cohen's weighted kappa test was used to evaluate the correlation of bite force.
The best correlation between patient's perception and T-Scan III was at the ± 7.5% cutoff range with 15 subject agreements. While the best correlation between clinician subjective interpretation and T-Scan III was at ± 5.0% cutoff range with 23 subject agreements. Cohen's weighted kappa indicated slight agreement between T-Scan III and patient's perception and fair agreement between T-Scan III and clinician.
Clinician subjective interpretation is more clinically reliable than patient's perception when T-Scan III is used as a gold standard.
本文的主要目的是确定患者感觉、临床医生主观判断与T-Scan III系统之间在最大牙尖交错位（MIP）时咬合力的相关性。
43名那黎宣大学（泰国彭世洛）的牙科学生参与了本研究。受试者通过使法兰克福水平面与水平面平行进行定位，并要求在MIP位双侧紧咬。通过询问患者哪侧颌骨咬合力更强（右侧、左侧或双侧相同）来评估患者感觉。然后，使用传统咬合指标评估临床医生的主观判断。此外，使用T-Scan III分析患者的咬合力。
采用Cohen加权kappa检验评估咬合力的相关性。
患者感觉与T-Scan III之间的最佳相关性出现在±7.5%的截断范围内，有15名受试者一致。而临床医生主观判断与T-Scan III之间的最佳相关性出现在±5.0%的截断范围内，有23名受试者一致。Cohen加权kappa表明T-Scan III与患者感觉之间有轻微一致性，T-Scan III与临床医生之间有中等一致性。
当以T-Scan III作为金标准时，临床医生的主观判断比患者感觉在临床上更可靠。
