Radiographic assessment of congenitally missing teeth in orthodontic patients

Aim:The purpose of this retrospective study was to determine the prevalence of hypodontia and to ascertain the need of interdisciplinary treatment for ensuing esthetic and functional problems in a target population of Al-Jouf Province, Saudi Arabia.Subjects and Methods:Using a dental administration software tool, a total of 1267 patients who presented to the outpatient clinics of the Orthodontic and Prosthodontic Departments between March 2015 and January 2016 were identified. Of those, 694 were females and 573 were males. All permanent teeth were investigated, except third molars.Results:The prevalence of hypodontia was 6.1%. The difference between genders was not statistically significant (P = 0.597) although female hypodontia prevalence was higher than males (6.6% and 5.5%, respectively). The majority of patients had one or two missing teeth. There were no significant differences between right and left sides for any particular tooth. The most commonly missing teeth were mandibular second premolar (40.1%), followed by the maxillary lateral incisor (20.4%) and then the maxillary second premolars (12.6%).Conclusions:The prevalence of hypodontia in Al-Jouf Province, Saudi Arabia, was within the average values portrayed in the majority of the published literature. The majority of affected individuals had one or two missing teeth. None of the patients examined had more than four missing teeth. There were no significant differences in the distribution of hypodontia between the affected jaws according to gender. Although less prevalent, considerable cases of bilateral missing teeth were found in the present study which necessitates the need for urgent interdisciplinary intervention and management.

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“…For example, missing maxillary lateral incisor could be more frequently found in orthodontic patients than in the general population. [27]…”

Section: Discussionmentioning

confidence: 99%

A retrospective cross-sectional study on the prevalence of hypodontia in a target population of Al-Jouf Province, Saudi Arabia

Sajjad

Husain

et al. 2016

Contemp Clin Dent

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“…Goya et al .,[3] Endo et al .,[9] Medina,[13] Sisman et al . [15] and Silva meza[16] also reported that missing teeth are mostly found bilaterally, whereas Fekonja[15] observed more prevalence of missing teeth in right side.…”

Section: Discussionmentioning

confidence: 99%

“…[891011121314] After third molars, agenesis of lower second premolars and upper lateral incisors are the most common types of hypodontia. [151617] The reported prevalence of hypodontia in orthodontic patients have been different between studies, ranging from 2.7%[16] to 11.3%. [17]…”

Section: Introductionmentioning

confidence: 99%

The prevalence and distribution pattern of hypodontia among orthodontic patients in Southern Iran

Hedayati

Dashlibrun

2013

Eur J Dent

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Objectives:To evaluate the pattern and prevalence of hypodontia and its association with different malocclusions among orthodontic patients in southern Iran.Materials and Methods:In this study, a total of 494 records of orthodontic patients (162 males, 332 females) were evaluated. To investigate percent of hypodontia pertinent information of patients was evaluated. Chi-square and Fisher's exact tests were used for statistical analysis.Results:The prevalence of tooth agenesis was 7.66%. Thirty-eight patients were found to have at least one tooth missing. Number of patients having hypodontia was the most in class III patients, whereas the number of missing teeth was more in class II sample. However, it was not statistically significant (P = 0.569). Upper lateral incisor (27.95%), lower second premolar (21.51%), and upper first premolar (12.9%) were respectively the most frequently absent teeth. There was not statistically significant difference between sexes (P = 0.580). Hypodontia observed to be more bilaterally, in the upper arch and in the left side.Conclusion:The pattern and prevalence of hypodontia is different among races and ethnic groups. In our study population, hypodontia was found to be 7.66%. Higher prevalence of hypodontia in the maxillary arch and in class III patients may be considered as an etiologic factor.

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“…[12] However, the estimated rate falls short of the published data on samples of orthodontic patients. [2930] A possible explanation may be the higher dental awareness and esthetic anxiety of individuals seeking orthodontic treatment. [12] With respect to the location of agenesis, missing mandibular laterals are rarely encountered in literature,[3132] and none have been diagnosed in our study sample.…”

Section: Discussionmentioning

confidence: 99%

Lateral incisor agenesis, canine impaction and characteristics of supernumerary teeth in a South European male population

2013

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Objective:To assess the prevalence of lateral incisor agenesis impacted canines and supernumerary teeth in a young adult male population.Materials and Methods:The panoramic radiographs of 1745 military students (mean age: 18.6 ± 0.52 years) who attended the Center of Aviation Medicine of the Armed Forces of Greece during the period 1997-2011 were initially analyzed for lateral incisor agenesis by two observers. After exclusion of the known orthodontic cases, a subgroup of 1636 examinees (mean age: 18.6 ± 0.44 years) was evaluated for canine impaction and supernumerary teeth.Results:Twenty-eight missing lateral incisors were observed in 22 military students, indicating an incidence of 1.3% in the investigated population. No lateral incisor agenesis was detected in the mandibular arch. A prevalence rate of 0.8% was determined for canine impaction in the sample of young adults. The majority of impacted teeth (86.7%) were diagnosed in the maxillary arch. Thirty-five supernumerary teeth were observed in 24 examinees (prevalence rate: 1.5%). The ratio of supernumerary teeth located in the maxilla versus the mandible was 2.2:1. The most common type of supernumerary tooth was the upper distomolar.Conclusion:The prevalence of lateral incisor agenesis, canine impaction, and supernumerary teeth ranged from 0.8 to 1.5% in the sample of male Greek military students.

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Radiographic assessment of congenitally missing teeth in orthodontic patients

Abstract: We confirmed that occurrence of CMT in the permanent dentition of a Mexican population most often affects third molars, followed by maxillary lateral incisors and then mandibular second premolars.

Cited by 109 publications

References 18 publications

A retrospective cross-sectional study on the prevalence of hypodontia in a target population of Al-Jouf Province, Saudi Arabia

A retrospective cross-sectional study on the prevalence of hypodontia in a target population of Al-Jouf Province, Saudi Arabia

The prevalence and distribution pattern of hypodontia among orthodontic patients in Southern Iran

Lateral incisor agenesis, canine impaction and characteristics of supernumerary teeth in a South European male population

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