|dc.description.abstract||Objective: The objective of this study was to further develop the sheep model
for periodontal surgical training to undergraduate students, and compare it to the more
commonly used pig model.
Method: Periodontal measurements as pocket depth and gingival width were
measured on a total number of 10 sheep and 9 pigs, and a pre-established list of surgical
procedures were performed on both types of specimen in different areas of the dentition;
gingivectomy, modified access flap with simple sutures, coronally advanced flap with
sling suture, apically repositioned flap with periosteal suture, papilla preservation flap,
GTR with membranes and distal wedge procedure. Quality, suitability for the respective
surgeries, and similarity to human conditions were addressed.
Result: Mean probing depths in sheep mandible were 2.59 mm and 2.26 in the
pig mandible, but statistical analysis showed no significant difference except when only
the molar measurements were compared. Most surgical procedures could be performed
in both specimens, apart from the papilla preservation flap which was difficult to perform
in both specimen, and classified as not suitable in the pig. The anterior area in the pig
was generally not suitable for any exercise of periodontal surgery, due to morphology
inconsistent with human conditions. Instructive standardized picture sequences were
created to facilitate training among undergraduates, and a practical session was held for
8th semester students to practically implement the sheep model at a teaching institution.
Conclusion: The sheep model is a valid option as a teaching model for undergraduate
students, compared to the widely used pig model.||en