Czas niechirurgicznego leczenia endodontycznego z użyciem lub bez użycia lupy
Methods
Patient recruitment
The study was approved by the Institutional Review Board of the University of Hong Kong/Hospital Authority Hong Kong West Cluster (HKU UW 09-303) in Hong Kong and Peking University (PKU IRB 00001052-10071) in Beijing, China. Chinese patients who were generally healthy and required primary endodontic treatment via the HKU Health Service Dental Clinic in Hong Kong and the PKU School and Hospital of Stomatology Special Service Clinic in Beijing were invited to participate in the study. They were allocated systematically into 2 groups by the receptionists: endodontic treatment with loupes and endodontic treatment without loupes. Teeth with pulpotomies were not accepted, and at least half of the coronal structure had to remain. The protocol of the study was explained to participants and consent was obtained. Patients who had severe acute pulpitis with facial swelling or systemic infection, severe systemic disease, increased stress on the temporomandibular joint musculature, or increased psychological stress were excluded from this study (Figure 1).
Sample size calculation
The outcome measure is the total chairside time for endodontic treatment. The time for endodontic treatment or root canal therapy (RCT) varies according to the number and shape of the canals. For sample size calculation, we estimated that the time for RCT is, on average, 90.0 minutes; a 13.5-minute (15%) difference between the test and control [...]
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