A multi-centre pilot clinical trial to assess patient’s expectations and experience of pain with temporary anchorage devices

Pace, Audrey Frances (2014). A multi-centre pilot clinical trial to assess patient’s expectations and experience of pain with temporary anchorage devices. University of Birmingham. M.Phil.

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Abstract

Objectives: 1. To determine whether placement of O-Cap reduces discomfort after temporary anchorage device (TAD) placement 2. To assess expectations and discomfort with TAD placement.

Method: 30 patients (14F, 16M; mean age 14y6m) requiring bilateral TADs (3M Unitek) for maxillary anchorage reinforcement, completed short answer, 100mm visual analogue scale (VAS) questionnaires at different time-points. One of the TADs on each patient was randomly allocated to placement of O-Cap (3M Unitek).

Results: VAS scores were higher on the control side compared to O-Cap side for all time-points. Wilcoxon signed-rank test showed statistically significant levels at 4hr post-placement (p<0.05), 24hr (p<0.05) and 1wk (p<0.0005) for cheek discomfort; 1wk (p<0.05) and 2wks (P<0.05) for gingival discomfort. Median VAS for cheek discomfort with O-Cap and control scored highest at 24hrs and 4hrs with 23mm (0-100mm) and 42.1mm (0-94.9mm) respectively. Median VAS for gingival discomfort with O-Cap and control scored highest at 1hr post placement with 36.8mm (0-100mm) and 48.4mm (0-100mm) respectively. Null hypothesis rejected. 80% of subjects reported extractions as more painful than TAD placement.

Conclusions: Discomfort levels of the overall TAD experience were greatest during the first hour following placement and the placement of an O-Cap gradually reduced discomfort during the first 6wks.

Type of Work:

Thesis (Masters by Research > M.Phil.)

Award Type:

Masters by Research > M.Phil.

Supervisor(s):