Differences between dentitions with palatally and labially located maxillary canines observed in incisor width, dental morphology and space conditions

TY - JOUR

T1 - Differences between dentitions with palatally and labially located maxillary canines observed in incisor width, dental morphology and space conditions

AU - Artmann, L

AU - Larsen, H J

AU - Sørensen, H B

AU - Christensen, I J

AU - Kjaer, I

PY - 2010/6/1

Y1 - 2010/6/1

N2 - Aim To analyze the interrelationship between incisor width,deviations in the dentition and available space in the dental archin palatally and labially located maxillary ectopic canine cases.Methods Size: On dental casts from 69 patients (mean age13 years 6 months) the mesiodistal widths of each premolar,canine and incisor were measured and compared with normalstandards. Dental deviations: Based on panoramicradiographs from the same patients the dentitions weregrouped accordingly: Group I: normal morphology; Group IIa:deviations in the dentition within the maxillary incisors only;Group IIb: deviations in the dentition in general. Descriptivestatistics for the tooth sizes and dental deviations werepresented by the mean and 95% confidence limits for themean and the p-value for the T-statistic. Space: Space wasexpresses by subtracting the total tooth sizes of incisors,canines and premolars from the length of the arch segments.Results Size of lateral maxillary incisor: The widths of thelateral incisors were significantly different in groups I, IIa andIIb (p=0.016) and in cases with labially located ectopic canineson average 0.65 (95% CI:0.25-1.05, p=0.0019) broader thanlateral incisors in cases with palatally located ectopic canines.Space: Least available space was observed in cases withlabially located canines. The linear model did show adifference between palatally and labially located ectopiccanines (p=0.03). Space related to deviations in the dentition:When space in the dental arch was related to dentaldeviations (groups I, IIa and IIb), the cases in group IIb withpalatally located canines had significantly more spacecompared with I and IIa.Conclusion Two subgroups of palatally located ectopicmaxillary canine cases based on registration of space, incisorwidth and deviations in the morphology of the dentition wereidentified.

AB - Aim To analyze the interrelationship between incisor width,deviations in the dentition and available space in the dental archin palatally and labially located maxillary ectopic canine cases.Methods Size: On dental casts from 69 patients (mean age13 years 6 months) the mesiodistal widths of each premolar,canine and incisor were measured and compared with normalstandards. Dental deviations: Based on panoramicradiographs from the same patients the dentitions weregrouped accordingly: Group I: normal morphology; Group IIa:deviations in the dentition within the maxillary incisors only;Group IIb: deviations in the dentition in general. Descriptivestatistics for the tooth sizes and dental deviations werepresented by the mean and 95% confidence limits for themean and the p-value for the T-statistic. Space: Space wasexpresses by subtracting the total tooth sizes of incisors,canines and premolars from the length of the arch segments.Results Size of lateral maxillary incisor: The widths of thelateral incisors were significantly different in groups I, IIa andIIb (p=0.016) and in cases with labially located ectopic canineson average 0.65 (95% CI:0.25-1.05, p=0.0019) broader thanlateral incisors in cases with palatally located ectopic canines.Space: Least available space was observed in cases withlabially located canines. The linear model did show adifference between palatally and labially located ectopiccanines (p=0.03). Space related to deviations in the dentition:When space in the dental arch was related to dentaldeviations (groups I, IIa and IIb), the cases in group IIb withpalatally located canines had significantly more spacecompared with I and IIa.Conclusion Two subgroups of palatally located ectopicmaxillary canine cases based on registration of space, incisorwidth and deviations in the morphology of the dentition wereidentified.

KW - Adolescent

KW - Child

KW - Cuspid

KW - Dental Arch

KW - Female

KW - Humans

KW - Incisor

KW - Linear Models

KW - Male

KW - Malocclusion

KW - Maxilla

KW - Odontometry

KW - Tooth Abnormalities

KW - Tooth Eruption, Ectopic

M3 - Journal article

C2 - 20635842

SN - 1591-996X

VL - 11

SP - 82

EP - 86

JO - European Journal of Paediatric Dentistry

JF - European Journal of Paediatric Dentistry

IS - 2

ER -