IADR Abstract Archives
Investigating Iatrogenic Tooth Damage Using Intraoral Scanners and 3D Metrology
Objectives: Introduction:
Removal of dental composites poses a challenge due to their similarity to natural teeth shade, often leading to iatrogenic tooth damage or incomplete composite removal. To prevent these issues, accurate detection and quantification of tooth damage and leftover composite is crucial.
Objectives:
Our research aimed to optimize the use of intraoral scanning and 3D metrology to evaluate the precision of composite removal, and use this method to investigate different potential factors contributing to iatrogenic tooth damage.
Methods: A group of experienced dentists (n=9) were each asked to remove different shades of composite from 6 Frasaco upper anterior teeth using different types of burs. An intraoral scanner was used to scan the teeth before and after composite removal. The scans were exported as STL files into a 3D mesh comparison software and superimposed for three-dimensional analysis. Potential factors affecting composite removal were then assessed using a mixed statistical analysis model.
Results: A mean of 2.688 mm3 remaining composite per tooth was observed. The type of the bur used (p= 0.012) was significantly associated, while the tooth type (p= 0.095), composite shade (p = 0.345), and dentist (p= 0.801) were not significantly associated with the amount of remaining composite. An average of 1.289 mm3 of iatrogenic tooth damage per tooth was observed; the type of the bur used (p= 0.483), the tooth type (p= 0.092), composite shade (p= 0.848), and dentist (p= 0.603) were not significantly associated with the amount of tooth damage.
Conclusions: The use of 3D metrology on intraoral scans allows for accurate quantification of iatrogenic tooth damage. Furthermore, the type of bur used for composite removal is significantly associated with the amount of remaining composite.
Removal of dental composites poses a challenge due to their similarity to natural teeth shade, often leading to iatrogenic tooth damage or incomplete composite removal. To prevent these issues, accurate detection and quantification of tooth damage and leftover composite is crucial.
Objectives:
Our research aimed to optimize the use of intraoral scanning and 3D metrology to evaluate the precision of composite removal, and use this method to investigate different potential factors contributing to iatrogenic tooth damage.
Methods: A group of experienced dentists (n=9) were each asked to remove different shades of composite from 6 Frasaco upper anterior teeth using different types of burs. An intraoral scanner was used to scan the teeth before and after composite removal. The scans were exported as STL files into a 3D mesh comparison software and superimposed for three-dimensional analysis. Potential factors affecting composite removal were then assessed using a mixed statistical analysis model.
Results: A mean of 2.688 mm3 remaining composite per tooth was observed. The type of the bur used (p= 0.012) was significantly associated, while the tooth type (p= 0.095), composite shade (p = 0.345), and dentist (p= 0.801) were not significantly associated with the amount of remaining composite. An average of 1.289 mm3 of iatrogenic tooth damage per tooth was observed; the type of the bur used (p= 0.483), the tooth type (p= 0.092), composite shade (p= 0.848), and dentist (p= 0.603) were not significantly associated with the amount of tooth damage.
Conclusions: The use of 3D metrology on intraoral scans allows for accurate quantification of iatrogenic tooth damage. Furthermore, the type of bur used for composite removal is significantly associated with the amount of remaining composite.