Hypohyperdontia: Agenesis of three third molars and mandibular centrals associated with midline supernumerary tooth in mandible

Nuvvula, Sivakumar; Kiranmayi, M; Shilpa, G; Nirmala, S V S G

doi:10.4103/0976-237x.72775

Cited by 18 publications

(30 citation statements)

References 27 publications

(37 reference statements)

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“…The average age of the reported patients was 11.29 years. Based on occurrence, the bimaxillary type (65%) was the most commonly reported (2)(3)(4)(5)(6)13,16,17, followed by the maxillary (21%) type (1,3,(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) and mandibular (14%) type (3,16,(19)(20)(21)(22)(23)(24)(25)(26)(27), the results being statistically significant (P < 0.001) (Fig. 1).…”

Section: Resultsmentioning

confidence: 99%

“…Although ample literature has exclusively described hypodontia or hyperdontia, only a few surveys have reported the occurrence of hypo-hyperdontia (5,6,23,49). It has been suggested that hypodontia and hyperdontia represent opposite ends of the developmental scale for dentition (31).…”

Section: Discussionmentioning

confidence: 99%

“…A high proportion of such cases may go undiagnosed if there are no associated symptoms. Visits of patients to a dentist for reasons such as delayed eruption, an erupted supernumerary tooth, missing teeth, unerupted teeth and referrals for the management of extra teeth would provide an opportunity for further clinical and radiographic investigations to establish whether hypo-hyperdontia is present (5,6,23). Panoramic radiographs are essential for indentifying hypodontia and/or hyperdontia, as they visualize the entire dentition.…”

Section: Discussionmentioning

confidence: 99%

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A comprehensive review of the literature and data analysis on hypo-hyperdontia

et al. 2014

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The objectives of this study were i) to conduct a comprehensive review of the literature on hypo-hyperdontia, and ii) to categorize the reported cases based on occurrence. An extensive search of the literature covering the period from January 1966 to January 2014 was conducted using the Embase, Google Scholar, Medline, and PubMed databases. The key words used in the search strategy were "concomitant", "agenesis", "hypodontia", "hyperdontia", "supernumerary teeth", "syndromes", and "hypohyperdontia" in various combinations. The retrieved data were analyzed based on gender, occurrence, and occurrence of both hypodontia and hyperdontia. Descriptive statistics were carried out using the chi-squared test. For hypo-hyperdontia overall, seven case studies and 40 cases involving 103 patients were reported. Our comprehensive review revealed that hypo-hyperdontia occurs most commonly in males (P < 0.05), and the bimaxillary type (65%) was reported most commonly in comparison with the maxillary, pre-maxillary and mandibular types (P < 0.001). Twenty syndromic cases and two case studies on familial occurrence of hypohyperdontia were reported. Almost 57% of cases affected the anterior region, whereas 43% of cases affected the anteroposterior region. The anterior region was most commonly affected by hyperdontia whereas the posterior region was most commonly affected by hypodontia. Hypo-hyperdontia is commonly seen in males, and the most common type is bimaxillary occurrence. G/BBB syndrome is commonly associated with hypo-hyperdontia, being relatively frequent in the anterior region, where mesiodens is frequently seen, and second premolars are the most commonly missing teeth. (J Oral Sci 56, 295-302, 2014)

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A comprehensive review of the literature and data analysis on hypo-hyperdontia

et al. 2014

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“…The presence of this condition in the same area of mandibular anterior region is reported very rarely. As discussed by Nuvvula et al, [3] and Marya et al, [4], in our case report also the possibility of a microdont central incisor with the congenitally missing contra lateral mandibular central incisor cannot be eliminated. However, this tooth can not be considered as central incisor as the shape of the crown of this midline tooth is distinctively conical that does not resemble to normal central incisor and also in comparison to mandibular lateral incisors its root formation is reduced.…”

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confidence: 49%

A Rare Occurrence of Non-Syndromic Hypo-Hyperdontia in the Mandibular Anterior Region

Tamrakar

Rathee

2014

JCDR

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Hypodontia and hyperdontia are considered to be two opposite extremes in the development of the dentitions. Hypodontia is described as a congenital condition marked by a less than normal number of teeth; it is also termed as partial anodontia, whereas, hyperdontia is a condition of having teeth additional to the normal complement; it is also termed as supernumerary tooth. As far as hypodontia and hyperdontia are concerned these conditions are frequently encountered in the patients. But, only a few surveys have reported the occurrence of both numeric anomalies in the same individual [1]. Simultaneous occurrence of both partial anodontia (hypodontia) and supernumerary tooth (hyperdontia) in the same individual (hypo-hyperdontia) is a very uncommon condition. Especially, its occurrence in the mandibular anterior region is extremely rare. The aetiology of this condition is still vague. Gibson adopted the term "hypo-hyperdontia' to describe this condition [2]. Since then, the term "hypo-hyperdontia" has frequently been used to describe this condition.Present case describes a rare condition of concomitant presence of single supernumerary tooth with missing both permanent central incisors teeth in the mandibular anterior region without any systemic condition or syndrome. A 21-year-old female reported to dental OPD of Department of Prosthodontics, Faculty of Dentistry, JMI, New Delhi, India, with the chief complaint of poor appearance due to abnormal shape and spacing in lower front teeth. She wanted the spacing in lower front teeth be corrected with artificial teeth. On intraoral examination, the absence of both mandibular central incisors and presence of a conical shaped small supernumerary tooth in the midline between permanent right and left lateral incisors i.e. teeth 32 and 42 (FDI notation) was noticed [Table/ Fig-1,2]. The supernumerary tooth was placed slightly towards left side causing spacing of about 3mm with left and of about 4mm with right mandibular lateral incisor. When patient was asked she told that she never under went for extraction of teeth and never got trauma in orofacial region. Intra oral periapical radiograph of mandibular anterior region also revealed bilateral absence of the permanent mandibular central incisors. It also showed presence of a conical supernumerary tooth between mandibular lateral incisors [Table /Fig-3]. Close observation of morphology of the crowns of the mandibular incisors, absence of any space between incisors and canines and findings of intra oral periapical radiograph affirmed that the congenitally missing teeth were mandibular permanent central incisors. A diagnosis of non-syndromic mandibular midline supernumerary tooth with congenitally missing permanent mandibular central incisors i.e. non-syndromic hypo-hyperdontia in the mandibular anterior region was attained.Patient was explained about the condition of her mouth. Diagnostic impression and diagnostic cast were made to make her better understand the condition of her mouth and all possible treatment modalities. She ...

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“…4 It has also been reported that the unilateral form of dental agenesis was more common than the bilateral version. 4,14,15 Single mandibular central incisor in mandible in has been reported and authors stated found the association with chromosome 18p. 16 Similarly, in the present case unilateral absence of central incisor was evident in both primary and permanent dentition.…”

Section: Discussionmentioning

confidence: 98%

A Unique Presentation of Concomitant Hypo-Hyperdontia in Seven Year Old Child: A Rare Report

Mallineni¹,

Mohiuddin²,

Patil³

et al. 2015

J Dent Indones

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Numerical variations of teeth are common. Hypodontia considered being presence of less number of teeth in normal complement while extra teeth to normal dentition are considered as hyperdontia. Hypodontia and hyperdontia are two opposite numerical variations of human dentition and occurrence of these two conditions is called as concomitant hypo-hyperdontia. The occurrence of hypo-hyperdontia in a patient is common. This report describes a rare occurrence of conical shape supernumerary teeth in premolar region and agenesis of tooth 55 and 81 in primary dentition and teeth 15, 25 and 41 in permanent dentition.

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Hypohyperdontia: Agenesis of three third molars and mandibular centrals associated with midline supernumerary tooth in mandible

Cited by 18 publications

References 27 publications

A comprehensive review of the literature and data analysis on hypo-hyperdontia

A comprehensive review of the literature and data analysis on hypo-hyperdontia

A Rare Occurrence of Non-Syndromic Hypo-Hyperdontia in the Mandibular Anterior Region

A Unique Presentation of Concomitant Hypo-Hyperdontia in Seven Year Old Child: A Rare Report

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