Estimation of the Crown Widths of Un-erupted Canine and Premolars by Using Vistibulo-oral Crown Dimensions of Per-manent Teeth

Jarjees, Hind T

doi:10.33899/rden.2012.65087

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…Many studies have been conducted in Iraq to predict the mesiodistal width of the unerupted canine and premolars depending on the crown diameter of the permanent incisors and first molars. [33][34][35][36][37][38][39][40][41] This study aims to test the applicability of the original Tanaka-Johnston equations on the Iraqi population and to develop a new one if not applicable.…”

Section: Discussionmentioning

confidence: 99%

Tanaka and Johnston Space Analysis: Does It Apply to All Populations?

Al-Zubaydi,

Obaid,

Nahidh

et al. 2024

European Journal of General Dentistry

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Objectives An accurate analysis is considered a crucial factor that enables the clinician to select the appropriate treatment plan which may include serial extractions, guiding of eruption, maintenance of space or regaining it, or just intervallic patient observation during this period. This study aims to test the applicability of the Tanaka and Johnston prediction equations on Iraqi population. Materials and Methods One hundred pairs of stone models belonged to 100 Iraqi adult individuals with normal occlusal relationship were utilized in this study. The greatest crown diameters of all teeth except the maxillary incisors and molars in both jaws were measured using digital calipers. The Tanaka and Johnston prediction equations were applied and modification for these equations was developed for Iraqis. Results The original Tanaka and Johnston method of prediction tends to overestimate the mesiodistal widths of the canine and premolars among Iraqis. Novel regression equations (modified Tanaka and Johnston method) were formulated for Iraqi population and seem to be more accurate than the original one. Conclusions The original Tanaka and Johnston method cannot be applied for Iraqi population; hence, new equations were developed for both genders and in both dental arches to accurately predict the mesiodistal widths of the unerupted canine and premolars.

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Section: Discussionmentioning

confidence: 99%

Tanaka and Johnston Space Analysis: Does It Apply to All Populations?

Al-Zubaydi,

Obaid,

Nahidh

et al. 2024

European Journal of General Dentistry

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“…(22) The difference between male and female tooth widths is been shown in several studies. (26)(27)(28) According to Staley et al, (29) the prediction of the width of the crowns of the teeth is more reliable on the left than on the right side of the jaw and this disagreement with Awni (30) , Legovic et al, (13) and Jarjees (31) who found there is no significant difference in the mesiodistal crown diameter of the teeth between right and left sides of the jaws for both male and female, so in our study the mean of right and left side is taken for both gender.…”

Section: Discussionmentioning

confidence: 99%

Gender Difference in the Prediction of Crown Widths of Unerupted Permanent Canines and Premolars with Crowded Teeth

Al-Jwarry.¹

2020

RDENTJ

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Aims: To determine whether the accuracy of the prediction of the summed widths of unerupted permanent canines and premolars depend on the patient's gender and to examine whether there are differences between sexes in the best combination of independent variables for predicting and to developing new predicting equations for crowding patient for both jaws and both sexes. Materials and methods: The sample consisted of eighty dental casts (40 males and 40 females). The age ranged between (14-22) years and all patients have anterior crowding. The mesiodistal crown diameters of the central incisors, the lateral incisors, the canines, the first premolar, the second premolar, and the first molars in the maxillary and mandibular arch were measured on dental casts. Basal arch lengths and intermolar distances for the upper arch and for the lower arch were also recorded. Predicted sum widths of permanent canines and premolars in both dental arches were calculated using backward multiple regression analysis by using statistical package for social science (SPSS). Results: In the male subject group, there were statistically significant correlations between central incisor and lateral incisor widths in the maxilla (r=0.456) and in the mandible between lower central and lateral incisor widths and lower basal arch length (r=0.682), and in the female subject group, there were statistically significant correlations between the central incisor and the lateral incisor widths, upper first molar, upper basal arch length and upper inter molar distance (r=0.742). For the mandible, lower central and lateral incisor and lower first molar widths (r=724). Also the correlation coefficients (r) and determination coefficients (R 2 ) for female group are greater when compared with those for the male subject group. Conclusions: Four regression equations for crowding patients for both gender are establish and the best combination of independent variables for prediction was found to differ between sexes.

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The Importance of the Maxillary and Mandibular Incisors in Predicting the Canines and Premolars Crown Widths

Al-Khannaq

Nahidh

Al-Dulaimy

2022

International Journal of Dentistry

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Background. The purpose of the present study was to use the combined mesiodistal crown widths of the mandibular and maxillary incisors as predictors for the combined mesiodistal crown widths of mandibular and maxillary canines and premolars. Materials and Methods. One hundred and twenty pairs of study models belong to 120 Iraqi adult subjects with normal dental and skeletal relations were included in the study. The crown widths of the mandibular and maxillary incisors, canines, and premolars were assessed at the maximum mesiodistal dimension on the dental casts using a digital electronic caliper with 0.01 mm sensitivity. The correlation between combined mesiodistal crown widths of the mandibular and the maxillary incisors and combined mesiodistal crown widths of mandibular and maxillary premolars and canines has been determined using Pearson’s coefficient correlation test for each arch and gender. Using simple regression analysis, the equations predicting the widths of the mandibular and maxillary premolars and canines were established. The predicted and the actual mesiodistal crown width values have been compared with the use of a paired sample t-test. Results. According to the findings of the present study, males had significantly wider teeth compared to females. Correlations between the measured parameters ranged from moderate to strong. A nonsignificant difference between actual and predicted mesiodistal crown widths was discovered. Conclusions. With a high degree of accuracy, the combined mesiodistal widths of the maxillary and the mandibular incisors could be utilized for predicting the combined mesiodistal crown widths of the mandibular and maxillary canines and premolars.

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Estimation of the Crown Widths of Un-erupted Canine and Premolars by Using Vistibulo-oral Crown Dimensions of Per-manent Teeth

Cited by 3 publications

References 18 publications

Tanaka and Johnston Space Analysis: Does It Apply to All Populations?

Tanaka and Johnston Space Analysis: Does It Apply to All Populations?

Gender Difference in the Prediction of Crown Widths of Unerupted Permanent Canines and Premolars with Crowded Teeth

The Importance of the Maxillary and Mandibular Incisors in Predicting the Canines and Premolars Crown Widths

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