ORTHODONTICS
AN ALTERNATIVE METHOD FOR ACCESSING IMPACTED CANINE USING A COMPUTER-AIDED DYNAMIC NAVIGATION TECHNOLOGY
DOI: https://doi.org/10.25241/stomaeduj.2023.10(1-4).art.4
Abstract
Objective
This in-vitro study aimed to compare dynamic navigation guidance (DNG) to the freehand method for exposure of palatally impacted canines.
Materials and Methods
Eighteen models with bilaterally palatally impacted canines were fabricated from resin. The models were scanned, and canine exposure was planned on CBCT by either traditional or DNG approach by randomizing the method and side. The time to plan, prepare, and drill was recorded. The Initial and final size of the osteotomy was measured. Time and osteotomy sizes were compared by jaw and method using two-way ANOVA.
Results
Thirty-six teeth were exposed evenly distributed between techniques. The total volume for initial and final osteotomy was assessed. The preparation time was significantly longer for the DNG, on average 10:07 (min:sec) compared to 3:19 for freehand (p<.0001).
The time to locate the tooth was significantly different on the left side, with DNG taking approximately two minutes longer than freehand (2:03; p=.0423) but did not differ significantly on the right side (16.78s longer for freehand; p=.9809). The time to finish the procedure did not vary significantly based on the method (p=0.8342) or side of the model (p=.3441). The total time was significantly longer for DNG (7:48; p<.0001). The initial osteotomy was marginally significantly smaller for DNG on the right side by an average of 7.25mm3 (p=.1520). The difference on the left side was insignificant (0.81, p=0.9933). The total volume removed did not differ significantly between the two methods (p=0.88851) or on the side (p=0.7582).
Conclusion
DNG can be used for canine exposure; however, the method requires longer preparation and operation time.
Keywords: Computer-Aided Navigation Technology; Impacted Tooth; Maxillary Osteotomy; Dental Digital Surgery; Tooth Movement Techniques;