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Agreement Between Faculty and %Comparison for Preparation Depth Assessment in a Dental Technique Skills Course
Author(s) -
SadidZadeh Ramtin,
Lawson Brian,
Hua Jia,
Arany Hema
Publication year - 2019
Publication title -
journal of dental education
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 68
eISSN - 1930-7837
pISSN - 0022-0337
DOI - 10.21815/jde.019.067
Subject(s) - syllabus , molar , dental education , dentistry , orthodontics , medicine , mathematics , mathematics education
The aim of this retrospective study was to assess agreement between faculty and virtual assessment software in depth evaluation of rounded rectangular preparations in non‐anatomical teeth prepared by second‐year dental students. A total of 184 non‐anatomical ivorine mandibular first molars prepared by second‐year students were retrospectively evaluated in 2018. Each tooth was prepared to a depth of 1.5 mm within a laser‐marked outline using a 330 bur, as detailed in the technique skills course syllabus. Preparations were recorded using an intraoral scanner. Then, virtual assessment software was used to superimpose a three‐dimensional (3D) image of each preparation on a 3D image of a standard preparation produced by a faculty member. The software was used to calculate percentage comparison (%Comparison) values at 200 μm tolerance. Values of %Comparison ≥72% were considered satisfactory. In addition, each preparation depth was evaluated by two calibrated faculty members using a periodontal probe and a 330 bur. The preparation depth was considered satisfactory when more than 50% of the tooth preparation had a depth of 1.5 mm. The results showed almost perfect agreement (0.81 < kappa < 0.99) between faculty assessment and %Comparison value. The findings suggest that %Comparison values may be used to assess the tooth preparation depth of rounded rectangular preparations in non‐anatomical teeth when prepared in a laser‐marked outline.