A Comparative Study of Morphological Variation in Maxillary Lateral Incisor in North and South Indian Population (original) (raw)
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Journal of Oral Hygiene & Health, 2013
Introduction: The maxillary central incisor in particular holds the key in creating a highly esthetic frontal profile and therefore appropriate selection of the tooth is of utmost importance in the restoration of the anterior segment of teeth in completely or partially edentulous patients. Although a number of studies have suggested various reference guides towards estimation of the width of central incisor, there have been no suitable guides to ascertain the length of the incisor in the absence of pre-extraction records. Purpose of the study: The present study attempted to arrive at a correct proportion for determining as far as possible the correct length of the maxillary central incisor with the help of facial measurements in the absence of pre-extraction records in a small proportion of the subcontinent Indian population. Materials and methods: The distance from the bridge of the nose to the base was compared to the length (actual and calculated by regression) of the maxillary central incisor in 400 patients of both sexes between the age groups of 20-35 years. Results: The length of the maxillary central incisor by calculated measurement ratios of facial measurements and regression equation showed variations between 0.2 to 0.4 mm in males and females respectively which was statistically significant (p<0.01). Conclusion: The distance from the bridge of the nose to base of the nose may be used as a reference to estimate the length of the central incisor in the subcontinent Indian population, although regression equation may be more accurate.
Journal of Dental Specialities, 2021
In prosthodontics, esthetics a combination of the art and science. Patients requiring complete dentures usually expect comfort first, followed by harmonious appearance, and lastly efficiency. Therefore, the correct selection of the artificial teeth is essential for achieving a pleasant esthetic outcome. A number of soft tissue landmarks have been purported as useful for anterior tooth selection; but these are easily affected by several factors such as aging and the weight and build of the person. In the present study hard tissue landmarks like pterygomaxillary notches and maxillary arch width was presented as alternative anatomical landmark for anterior teeth selection. The aim of the study was to evaluate the hamular width and inter maxillary arch width which could be the guide for the selection ofartificial teeth for complete maxillary denture in the NorthEast Indian population. Materials and Methods: The study was conducted on 100 dentate individuals from the North Eastern Indian population, between the age group of 18-30 years. All measurements were done with digital calliper on cast obtained after impression with irreversible hydrocolloid impression material. Result : Pearson correlation analysis showed, statistically significant correlation between maxillary archwidth and central incisor width. The result was significant at p<0.05 but not high enough to be practically used. Correlation between hamular width and central incisor width was found to be insignificant. The value of R was 0.05435. The result was significant at p < 0.05. Conclusion: The maxillary arch width was in direct proportion to the maxillary central incisor width which meant that the increase of maxillary arch width,there was a corresponding increase of maxillary central incisor width. Significant correlation was found between maxillary arch width and central incisor width with p value=0132. The result was significant at p<0.05 but not high enough to be practically used. But In this study statistically insignificant correlation was found between hamular width and central incisor width. This is an Open Access (OA) journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
The selection of appropriate size of artificial teeth takes an important place in designing complete denture prosthesis. However, the standards or proportions commonly used as a guide have been developed mainly on Caucasian populations. Objectives: To investigate the relationship between intercanthal distance and two variables i.e. mesiodistal width of central incisors and combined width of six maxillary anterior teeth size in Kashmiri population. Materials and methods: This is a descriptive cross sectional study conducted on 200 subjects, (100 males -100 females), from Kashmiri population. The age range was from 18-55 years. The intercanthal distance was measured as the distance between the medial (inner) angles of the palpabral fissure. Mesiodistal width of the maxillary central incisors and combined width of six maxillary anterior teeth were recorded. An electronic digital caliper (Narex -Czechoslovakia), was used for all measurements. Data were analyzed using Person chi-square test. Results: For the sample population the ratio was 1:0.268 for the central incisors and 1:1.395 for six anterior teeth. Mean intercanthal distance was found to be 31.67. Conclusion: These results could be used as a helpful guide for initial selection of anterior teeth width in the Kashmiri population.
International Journal of Clinical Pediatric Dentistry, 2023
Aim: The aim of the study was to evaluate the relationship between nasolabial angle (NLA) with maxillary incisor proclination (U1-NA) and upper lip thickness (ULT). Materials and methods: Pretreatment lateral cephalometric radiographs of 120 patients were taken, and NLA, U1-NA, and basic ULT measurements were obtained for each patient. Descriptive statistics were calculated for all the variables involved in the study. The correlation was found using the Pearson correlation coefficient (r) test. p < 0.01 was considered statistically significant. Results: The mean values of NLA, upper incisor proclination, and ULT were found to be 91.38° ± 7.10°, 34.21° + 5.17°, and 15.38 ± 1.76 mm, respectively. r (r = −0.583) was found between NLA and upper incisor proclination and (r = −0.040) for NLA and ULT. Conclusion: There is a statistically significant relationship between NLA and U1-NA.
World Journal of Dentistry
Introduction: Various anthropometric measurements have been used to determine the size of maxillary anterior teeth. However, which anthropometric measurement is the most reliable indicator to determine the width of maxillary anterior teeth remains unclear. Aims and objectives: To evaluate which anthropometric measurement is the most reliable indicator in determining the width of maxillary anterior teeth. Materials and methods: An electronic search was conducted for scholarly articles discussing various anthropometric measurements used for determination of width of maxillary anterior teeth, written in English or translated into English listed with PubMed, Cochrane Library, ScienceDirect, Wiley Online Library, and Google scholar databases. The search strategy yielded 119 articles. Out of them, 70 were excluded following reading of abstract, and 49 were selected for full-text reading. Of these, 21 were excluded based on exclusion criteria. Finally, 28 articles were included for final search. Due to heterogenicity of studies, a meta-analysis was not performed. Results: High degree of correlation was seen between interalar width (IAD), interpupillary distance (IPD), bizygomatic width (BW), and width of maxillary anterior teeth, in Indian population, whereas in Saudi population, intercanthal distance (ICD) has high degree of correlation to the width of maxillary anterior teeth, and in Brazilian (mulatto and blacks) population, high degree of correlation was seen between intercommissural width (ICOW) and width of maxillary anterior teeth. Conclusion: The anthropometric measurement used depends on the population group in which it is being used. There is no single anthropometric measurement that can be used to determine the width of maxillary anterior teeth. Hence, more studies with large sample size and different population groups need to be conducted. Clinical significance: In Indian population, high degree of correlation was seen between IAD, IPD, BW, and width of maxillary anterior teeth. The results of the previous study should be validated by including a large population size spread over entire Indian subcontinent. This would also help to generate multiplication factor for various anthropological measurements for use limited to the Indian population.
Evaluation of Co-Relation between Philtral Width and Maxillary Central Incisors Width
Journal of Advances in Medicine and Medical Research, 2018
Aim and Objective: To evaluate the co-relation between philtral and maxillary combined central incisor width in north Indian population. Materials and Methods: Measurement of philtral width was done by measuring the width of philtrum with digital vernier calipers (to the fraction of 1/10th of a millimeter). Measurement of width of central incisor was done intraorally with a digital vernier caliper. Results: There was a mild significant correlation of philtral width with central incisor width (r=0.27, p=0.003). Conclusion: There is a mild significant coorelation between the philtrum width and central incisor width, so we can use the philtrum width to determine the combined central incisor width in north indian population in cases of no pre-extraction records available. Using this result we can easily provide esthetically pleasant maxillary central incisors with proper tooth width and tooth form according to philtrum width and face form.
Comparative Evaluation of Mesio-Distal width of Six Anterior Maxillary Teeth in Jammu Region
IOSR Journal of Dental and Medical Sciences, 2017
Aesthetics is one of the key factorials in dental sciences which is not based on any fixed rules. SPA concept was prescribed to aid clinicians in selection of teeth according to age, sex and personality of the patient. Materials & method: 200 students comprising of 100 males and 100 females were taken in the study. Alginate impressions were made of maxillary arches and casts were poured in Type III dental stone. Measurements were done using Vernier caliper for individual tooth. A line following the maximum contours of teeth was drawn perpendicular to the long axis of teeth and measurements were carried out for all 100 maxillary casts. Thread was also used to measure Mesiodistal width of three teeth on both right and left sides and entire mesiodistal width of 6 teeth. Data was collected and statistically analyzed. Result: The mean mesio distal width of all six anterior teeth was found to be 47.1 mm in males and 46.1 mm in females. In males, the mean mesio distal width of three anterior teeth on right and left side was found to be 23.8 mm and 23.3 mm respectively. In females, The mean mesio distal width of three anterior teeth on right and left side was found to be 23.4 mm and 22.7 mm respectively The mean difference between central incisors, lateral Incisors and canines on right and left side was found to be 0.1 mm, 0.2mm and 0.2 mm in males and 0.2 mm, 0.3 mm and 0.2 mm in females respectively. Conclusion: The mesio-distal width of anterior maxillary teeth was found more in males than females. Both males and females have more mesio-distal width on right side than left side in population of Jammu.
Journal of Indian Prosthodontic Society, 2012
The purpose of the study was to determine the mesiodistal width of six anterior teeth for better esthetics and good tooth arrangement in a cross section of Rajasthan population. The mesiodistal dimension of central, lateral incisor and canine on right and left sides was measured in 250 males and 250 females, these readings were used to determine the mean, minimum and maximum maxillary/mandibular teeth 'anterior ratio', difference in mesiodistal width, combined mean mesiodistal width, the number and percent of similar teeth of maxilla and mandible. It was observed from the present study that there is variation in mesiodistal width in right and left sides signifying that the anterior teeth are not mirror images of one another. Male subjects have greater mesiodistal width than female subjects and right side dominates in most of the readings indicating that mesiodistal width is greater on right side than on left side. Percentage variability and sexual dimorphism are also importa...