数字化与传统稳定型咬合板治疗ADDWoR的临床效果比较OA

Objective:To compare the clinical efficacy of digital versus conventional stabilization splints in the treat-ment of anterior disc displacement without reduction(ADDWoR)of the temporomandibular joint.Methods:Thirty-two ADDWoR patients were randomly allocated to a conventional group(n=16)and a digital group(n=16).The conventional group received splints made using standard laboratory procedures.The digital group underwent intraoral scanning and digital facebow recording to capture jaw relationships and mandibular movement trajectories,splints were then designed and fabrica-ted via CAD/CAM.Pain intensity(VAS score)was assessed,temporomandibular joint function(Fricton index)and oral health-related quality of life(OHIP-14 score)were assessed before and after treatment.Chairside adjustment time and patient satisfaction(Likert scale)were also recorded.The digital group was additionally evaluated for mandibular range of motion and movement trajectory morphology before and after treatment.Results:After 3 months of treatment,both groups showed signifi-cant improvement in the Fricton index and VAS scores compared to baseline(P<0.05),but no statistically significant differ-ences were found between the two groups.The chairside adjustment time in the digital group was significantly shorter than that in the conventional group[(1 593.75±129.56)s vs.(2 433.75±199.56)s,P<0.001],and patient satisfaction scores were higher in the digital group(P<0.05).Both groups demonstrated a significant increase in mandibular range of motion com-pared to baseline(P<0.05),with movement trajectories becoming smoother and more symmetrical.Conclusion:Digital and conventional stabilization splints are equally effective in alleviating the core symptoms of ADDWoR.However,the digital workflow offers advantages in improving treatment efficiency and enhancing patient satisfaction.