RESUMEN
Our aim was to evaluate the occlusal force and therapeutic efficacy of the masseteric muscles after intramuscular injection of botulinum toxin A (BTX-A) for the treatment of patients with concurrent temporomandibular disorders (TMD) and bruxism. Thirty patients with TMD associated with bruxism were randomised into three groups (n=10 in each group), and treated by bilateral intramuscular injection of BTX-A into the masseter, placebo, or control. We used an occlusal force analysis system to collect several measures of occlusal force such as duration of biting and closing, the maximum occlusal force, and the distribution of occlusal force. The occlusal force in the intercuspid position was reduced in all three groups. There was a significant difference between the BTX-A and placebo groups (F(df=1)=8.08, p=0.01) but not between the control group and the other two(F(df=1)=4.34, p=0.047). The duration of occlusion was significantly increased in the BTX-A group after 3 months' treatment (t=4.07, p=0.003). The asymmetrical distribution of occlusal force was reduced in all three groups, but not significantly so (Levene's test F(df=2)=0.25, p=0.78,ANOVA F(df=2)=0.50, p=0.61). Treatment of TMD with BTX-A is effective in reducing the occlusal force, but psychological intervention plays an important part in treatment.
Asunto(s)
Fuerza de la Mordida , Toxinas Botulínicas Tipo A/uso terapéutico , Fármacos Neuromusculares/uso terapéutico , Trastornos de la Articulación Temporomandibular/tratamiento farmacológico , Humanos , Inyecciones Intramusculares , Músculo MaseteroRESUMEN
PURPOSE: To Introduce health education pathway to patients with removal impacted teeth, with the aim of helping patients to reduce tension or anxiety and improve the level of patients' satisfaction and cognition for dental surgery. METHODS: One hundred patients with impacted teeth surgery were randomly allocated into the experimental group and the control group. Health education pathway was given to patients in the experimental group while patients in the control group received traditional health education before surgery. The Hamilton-Anxiety Scale(HAMA) was applied to evaluate the anxiety of patients before and after treatment. A self-designed questionnaire survey was conducted among patients to evaluate the level of their satisfaction and cognition of dental surgery. RESULTS: Before the experiment, no significant difference in HAMA score was found between the two groups. After health education conducted, the score of the experimental group was significantly lower than that in the control group(P<0.01), meanwhile the rate of satisfaction and the level of cognition in the experimental group was significantly higher than that in the control group (P<0.01). CONCLUSIONS: Establishing and conducting the health education pathway on patients with impacted teeth removal can reduce their tension or anxiety, thus improving the quality of clinical service.