Occlusion and Disocclusion Time Changes in Single Unit Crowns Designed by Functional Generated Path Technique: A Randomised Clinical Trial.
Although it is believed that implementation of the functional generated path (FGP) technique can facilitate occlusal surface design for restorations, it has not been objectively compared in situ with the conventional fabrication yet. Therefore, in the present study, a single-blind crossover clinical trial was conducted using T-scan to compare changes in occlusion time (OT) and disocclusion time (DT) of single posterior artificial crowns designed differently using FGP technique (FGP), average-value FGP technique (AVR) and conventional fabrication (CON). Each of the 10 participants took part in the study tried three artificial crowns in different sequences according to a computer generated randomization list. The results objectively revealed that changes in OT and DT were significantly smaller for FGP than CON (P < 0.05) and considerably smaller for AVR than CON, respectively. The subjective feedback and the occlusal adjusting time were better and shorter for FGP and AVR than CON (P < 0.05). No harm to the participants occurred. Overall, FGP is an efficient technique showing more physiological harmonious relationship with the articulating system.
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
Ping-Ting
PT
Lin
Department of Stomatology, PLA Army General Hospital, Beijing, 100700, P. R. China.
Yang
Y
Jiao
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
San-Jun
SJ
Zhao
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
Fu
F
Wang
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
Ling
L
Li
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
Fan
F
Yu
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
Min
M
Tian
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China.
Hao-Han
HH
Yu
State Key Laboratory of Military Stomatology & National Clinical Research Centre for Oral Disease & Shaanxi key Laboratory of Oral Disease, Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, 710032, P.R. China. jhchen@fmmu.edu.cn.
Ji-Hua
JH
Chen
D000328:Adult; D000368:Aged; D017076:Computer-Aided Design; D018592:Cross-Over Studies; D003442:Crowns; D003766:Dental Occlusion; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008422:Materials Testing; D008875:Middle Aged; D016037:Single-Blind Method; D055815:Young Adult