American Journal of Orthodontics and Dentofacial Orthopedics
Original articleInterrelationship between the position of impacted maxillary canines and the morphology of the maxilla
Section snippets
Material and methods
This study was approved by the institutional review board at the School of Dentistry of Seoul National University in Korea (S-D20100003). Patients who received orthodontic diagnoses at the Dental Hospital of Seoul National University for treatment of impacted maxillary canines between 2005 and 2010 were enrolled. These patients were clearly diagnosed with maxillary canine impactions. To make an exact diagnosis, data including computed tomography images were collected. Diagnosis criteria of the
Results
To measure intraexaminer agreement, 10 randomly selected subjects from each group were reevaluated 2 weeks later. No significant intraexaminer differences were noted, with a Cohen’s kappa coefficient of 0.833.
The average values and standard deviations for each item in the 2 groups are given in the Table. Both the arch length/intermolar width × 100 and the palatal vault depth/intermolar width × 100 formulas showed statistically significant differences (P <0.0001), indicating differences in the
Discussion
According to previous studies, there has been a dispute about whether the maxillary transverse arch width is an etiologic factor for maxillary canine impaction. Some authors have stated that the transverse discrepancy of the maxilla increases the possibility of impaction.30, 31 Others have found no correlation between them or that a large transverse arch dimension actually increases the possibility of canine impaction.32, 33 All those studies examined the features of the maxillary occlusal
Conclusions
In this study, we examined whether the position of impacted maxillary canines is related to the morphology of the maxilla. The conclusions are as follows.
- 1.
The shape of the maxillary arch was narrower and longer in the palatally impacted canine group compared with the buccally impacted canine group (P <0.0001).
- 2.
The palatally impacted canine group had a deeper palatal vault than did the buccally impacted canine group (P <0.0001).
- 3.
There were no statistically significant differences in tooth size (P =
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Cited by (31)
Investigation of the relationship between maxillary dimensions and labial and palatal maxillary impacted canines using cone beam computed tomography
2023, Journal of Stomatology, Oral and Maxillofacial SurgeryCitation Excerpt :Also, there was no significant difference between the nostril widths of the groups. Kim et al. [5] reported similar nasal cavity and nostril widths to those in groups with labial and palatal impaction, and they found no significant difference between their groups. In another study [9] as opposed to our result, there was no significant difference between nasal cavity widths of the individuals with palatal MIC and those with erupted canines.
Evaluation of maxillary arch width and palatal volume and depth in patients with maxillary impacted canine by CBCT
2022, HeliyonCitation Excerpt :For example, an impacted tooth can change the space in the dental arch. Buccal impaction is more common in cases of lack of space in the dental arch and palatal impaction is more of a genetic origin [8]. There is a hypothesis that tooth impaction can reduce the stimulation of bone growth caused by the chewing process [7].
Difficulties obtaining matched groups
2019, American Journal of Orthodontics and Dentofacial OrthopedicsMorphology of maxilla in patients with palatally displaced canines
2019, International OrthodonticsCitation Excerpt :Deep palatal vault indicates maxillary vertical excess that is highly influential in the positioning of the permanent teeth buds. Kim et al. [24] concluded that the palatal vault depth is significantly less in the buccally impacted canine group than in the palatally impacted canine group, but no comparison was made with a control group. We found no previous, similar study measuring the palatal intermolar area; therefore, we could not compare our study with others.
Maxillary transverse dimensions in subjects with and without impacted canines: A comparative cone-beam computed tomography study
2018, American Journal of Orthodontics and Dentofacial OrthopedicsAlternative cone-beam computed tomography method for the analysis of bone density around impacted maxillary canines
2018, American Journal of Orthodontics and Dentofacial Orthopedics
The authors report no commercial, proprietary, or financial interest in the products or companies described in this article.