pdf Computer-aided 3D analysis of cavities via prepCheck

computer‐aided 3D analysis of
cavities via prepCheck - a pilot study
A. Stumpf 1, P. Weigl 2, T. Gerhardt 1, R. Felber 2, D. Heidemann 1, S. Gerhardt-Szép 1
1 Policlinic
of Conservative Dentistry, Goethe‐University Frankfurt a.M., Germany
2 Policlinic of Prosthodontics, Goethe‐University Frankfurt a.M., Germany
Objectives
Results
Cavity preparations play an essential role in education [1].
Despite the problematical supervision rate [2] due to a raising
number of students [3], the educational quality assurance
including the assessment must be ensured [2]. Students are
often insecure about their cavity preparations and their
assessment is often influenced by subjective parameters.
Systems for the process automation are only partly available
[4,5]. So far, there is no convenient software for the analysis
of cavity preparations.
The response rate was 100%.
For the assessment of the cavities via prepCheck, it was
helpful (in comparison without that help) ...
Mean (SD)
... to evaluate sharp edges on the inner angles of the cavities
1,60 ±
0,89
(„Surface“ – are pictured orange)
(„Undercut“ – are pictured yellow-orange)
1,40 ±
0,55
The opportunity of evaluating the layer thickness of a restauration
via prepCheck is helpful.
1,80 ±
0,84
... to see undercuts in the insert direction.
A modern 3D system (prepCheck, Sirona), which can
automatically and objectively measure and analyze
preparations, was analyzed in the first clinical semester.
Is the system suitable for the assessment of cavity
preparations in the conservative dentistry?
How do the students evaluate the new system overall?
Mean (SD)
It is helpful to assess the finished restauration in advance.
Methods
I find working with the prepCheck helpful for exam preparation.
In order to untertake the study, several steps were taken:
• Project schedule for the implementation
• Expert committee + train the teacher
• Technical arrangements + master preparations
• Developing Evaluation sheets
I believe that I can learn how to preparate teeth just with support of
prepCheck and without any help of an assistant professor.
1,00 ±
0,00
1,40 ±
0,55
2,80 ±
0,84
1,00 ±
0,00
I can recommend the prepCheck my fellow students.
Pilot study
Criterion for inclusion
Students who passed the first clinical
semester sucessfully
Students from the second clinical
semester
Neither experience with Cerec nor
with prepCheck
Criterion for exclusion
Students who did not pass the first
clinical semester sucessfully yet
Students from other semesters
Mean (SD)
Please mark prepCheck with school grades.
(1=very good, 2=good, 3=satisfactory, 4=adequate, 5=inadequate, 6= insufficient)
1,60 ±
0,55
Working with prepCheck was easy.
(1=strongly agree, 5=strongly disagree)
Students with experience in the Cerec
and/or prepCheck software
Number
Male
Female
Age
5
3
2
21-29
1,80 ±
0,45
Conclusion
Future prospects:
1. Train the student
• in the use of Cerec and prepCheck
www.frasaco.com
2. preparation and use of prepCheck
• the CerecAC (Omnicam/Bluecam) and the analysis software prepCheck
were used to compare and evaluate the student preparation with the
previously created master preparation.
3. Evaluation
The evaluation was conducted by a questionnaire
•36 items
•Likert scale 1-5
(1 =„strongly agree“ to 5 =„strongly disagree“)
•School grades 1-6
(1 =„very good“ to 6 =„insufficient“)
•Questions focused on the concept to learn with
prepCheck and the personal learning style of the
students.
the participants rated the computer‐aided 3D analysis
of cavities via prepCheck consistently positive.
References
1. Curriculum Zahnmedizin 2012
2. Wissenschaftsrat 2005: Empfehlungen zur Weiterentwicklung der Zahnmedizin an den Universitäten in
Deutschland.
3. German Federal Office of Statistics 2012
4. Jasinevicius 2004 (DentSim)
5. Kournetas 2004 (Prep Assistant)
Contact
Cand. med. dent. Annika Stumpf, e-mail: annikastumpf@gmail.com