Canine edge width and height affect dental esthetics in maxillary canine substitution treatment

Abstract

Background To investigate the effect of canine edge width and height on dental esthetics in maxillary canine substitution treatment. Methods A total of 127 canine substitution treatment cases were screened and evaluated by a panel of orthodontic experts and laypersons in the pilot study. The top five subjects with the esthetically most pleasant canine substitution were included in the study, resulting in 140 computerized images displaying only the upper dentition, with different canine edge widths (0%, 12.5%, 25%, 37.5%, 50%, 62.5%, and 75% of the central clinical width) and heights (− 0.5 mm, 0 mm, 0.5 mm, and 1.0 mm vertically relative to the central incisor edge) finally used for the esthetic evaluation by 101 observers (41 orthodontists and 60 laypersons). The ordered logistic regression analysis, the univariate analysis of variance, the chi-square, and Fisher’s exact tests were used for statistical analyses. Results The most esthetic canine shape for canine substitution was found to be a shape with the edge width of 62.5% of the central incisor width and the edge height of 0.5 mm gingival to the central incisor edge ( P < 0.05). The canine edge width of 50–75% and height of 0.5–0 mm gingival to the central incisor edge were generally considered to be esthetic by all observers. Orthodontists and laypersons had the same ranking on the top two most esthetic canine shapes (edge width and height 62.5% and 0.5 mm gingival; 50% and 0 mm incisal) as well as the bottom two most unesthetic canine shape (0% and 0.5 mm gingival; 75% and 1 mm incisal). Male and female observers generally had similar esthetic grades and rankings on the canine shapes ( P > 0.05). Conclusions The most esthetic canine shape for canine substitution is a shape with the canine edge width of 62.5% of the central incisor width and the edge height of 0.5 mm gingival to the central incisor edge. The different collocations of the canine edge width and height affect dental esthetics of the canine during canine substitution treatment.

Dentofacial mini- and microesthetics as perceived by dental students: A cross-sectional multi-site study

“…The latter finding was not entirely unexpected: our photo model had long canines, which means that in the unmodified variation of the photo, the canines extended below the incisal edges of the central incisors. Li and colleagues, working with similar frontal photos to ours, found that both orthodontic experts and laypersons showed low tolerance regarding the difference between the length of the central incisors and canines and preferred situations when the canines where slightly shorter [28]. Our results corroborate this: shorter canines were preferred over longer ones.…”

Esthetic Perception of Different Clinical Situations of Maxillary Lateral Incisor Agenesis According to Populations with Dental and Non-Dental Backgrounds: A Systematic Review and Meta-Analysis

“…The search of the different databases with a Boolean expression and after duplicate removal retrieved 36 articles, of which 6 were excluded due to their titles, 10 were excluded due to their abstracts, and 7 were excluded after integral reading revealed that they failed to meet the set objectives or were not related to MLIA. Finally, one [ 48 ] was added through a manual search. A total of 13 studies [ 6 , 7 , 9 , 14 , 16 , 18 , 19 , 25 , 48 , 49 , 50 , 51 , 52 ] were included in the qualitative analysis.…”

“…Finally, one [ 48 ] was added through a manual search. A total of 13 studies [ 6 , 7 , 9 , 14 , 16 , 18 , 19 , 25 , 48 , 49 , 50 , 51 , 52 ] were included in the qualitative analysis.…”

“…Only three studies [ 9 , 14 , 16 ] used sample size calculations to confirm the inclusion of sufficient individuals to represent the population. Concerning the correct sample description, globally, there was a lack of distinction between general dentists and specialists, namely orthodontists, not always well-defining their professional training and not being, in some cases, officially considered specialists [ 16 , 18 , 19 , 48 , 52 ]. The digital model [ 14 , 16 , 48 ] and the real model [ 6 , 7 , 9 , 18 , 19 , 25 , 49 , 50 , 51 , 52 ] were considered valid for meeting the goals proposed by the authors.…”

Dental follicles promote soft tissue management in surgical exposure of labially impacted maxillary canine

“…The maxillary canines are crucial for maxillofacial aesthetics and dental occlusion. Their impaction, although rare, can severely affect oral function, and an occlusal relationship that reduces the quality of life [ 1 , 2 ]. A combined treatment of surgical exposure and orthodontic therapy is a viable alternative to early interceptive measures with extraction of deciduous teeth failing to prevent the development of impacted anterior teeth [ 3 , 4 ].…”