Astrocyte

CASE IN POINT - CLINICS IN PEDODONTICS AND PREVENTIVE DENTISTRY
Year
: 2017  |  Volume : 3  |  Issue : 4  |  Page : 231--233

Management of maxillary anterior supernumerary teeth


IE Neena, Mebin G Mathew, P Poornima, KB Roopa 
 Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere, Karnataka, India

Correspondence Address:
I E Neena
Department of Pedodontics and Preventive Dentistry, College of Dental Sciences, Davangere - 577 004, Karnataka
India

Abstract

Supernumerary teeth may be defined as any teeth or tooth substance in excess of the usual configuration of 20 deciduous and 32 permanent teeth. Their prevalence in primary dentition has been recorded variously between 0.3% and 0.8%, and between 0.1% and 3.8% in relation to permanent dentition. They may be a part of number of developmental disorders such as cleft lip and palate, cleidocranial dysostosis, Gardner's syndrome, Fabry Anderson's syndrome, Ehlers–Danlos syndrome, incontinentia pigmenti, and Trico Rhino-Phalangeal syndrome. If neglected, they can be the harbinger of a number of esthetic and pathologic complications. The management is dodged with several controversies.



How to cite this article:
Neena I E, Mathew MG, Poornima P, Roopa K B. Management of maxillary anterior supernumerary teeth.Astrocyte 2017;3:231-233


How to cite this URL:
Neena I E, Mathew MG, Poornima P, Roopa K B. Management of maxillary anterior supernumerary teeth. Astrocyte [serial online] 2017 [cited 2020 Jan 23 ];3:231-233
Available from: http://www.astrocyte.in/text.asp?2017/3/4/231/209931


Full Text

 Introduction



Tooth development is a continuous process with numerous physiologic growth processes and various morphologic stages interplaying to achieve the tooth's final form and structure. An interference in the stage of initiation or any momentary event may result in single or multiple missing teeth or supernumerary teeth.[1] Supernumerary teeth may be defined as any teeth or tooth substance in excess of the usual configuration of 20 deciduous and 32 permanent teeth.[2] These teeth were first described in 23 and 79 AD.[3]

 Case Report



A 12-year-old girl reported to the Department of Pedodontics and Preventive Dentistry with a chief complaint of extra teeth in the maxilla. A thorough general examination was done to rule out any syndromes. Medical and family histories were noncontributory [Figure 1] and [Figure 2]. The patient had labially proclined maxillary central incisors with incompetent lips. Intraoral examination revealed permanent dentition with two tuberculate supernumerary teeth palatal to the permanent maxillary central incisors [Figure 3]. An occlusal radiograph was obtained to rule out any other unerupted supernumerary teeth. The two supernumerary teeth were extracted and the patient was referred to the Department of Orthodontics for orthodontic rehabilitation [Figure 4] and [Figure 5].{Figure 1}{Figure 2}{Figure 3}{Figure 4}{Figure 5}

 Discussion



Supernumerary teeth have been reported both in deciduous and permanent dentition with a male predilection. Supernumerary teeth may occur in any area of the dental arch, may be single or multiple, present unilaterally or bilaterally, malformed morphologically or normal in size and shape, straight or inverted in position, and may be erupted or impacted. Cases involving one or two supernumerary teeth show a predilection for the anterior maxilla, followed by the mandibular premolar region. In other regions, differences have been reported in the relative frequency of these teeth. Cases involving multiple supernumeraries (more than five) are most commonly seen in the mandibular premolar region.[2]

Supernumerary teeth are more commonly found in the Mongoloid racial group with a reported frequency higher than 3%.[4] Koch et al.[5] stated that the prevalence of supernumerary teeth in permanent dentition is 13%, and the prevalence in primary dentition according to Primosch [6] is 0.3–0.6%. Rajab and Hamden found the prevalence in primary dentition as 0.3–0.8% and in permanent dentition as 0.1–3.8%.[7]

Both genetic and environmental factors play a role in the etiology of supernumerary teeth.[8] Several theories have been suggested to explain their occurrences.

Atavism theory: This theory suggests that supernumerary teeth were the result of phylogenetic reversion to extinct primates with three pairs of incisors. This theory has been largely discounted.[6]

Dichotomy theory: This theory suggests that the tooth bud splits into two equal or different-sized parts, resulting in the formation of two teeth of equal size or one normal and one dysmorphic tooth, respectively. However, this theory has also been discounted.[6]

Dental lamina hyperactivity theory: This involves localized, independent, conditioned hyperactivity of the dental lamina.[7] According to this theory, a supplemental form would develop from the lingual extension of an accessory tooth bud, whereas a rudimentary form would develop from the proliferation of epithelial remnants of the dental lamina. Most literature supports the dental lamina hyperactivity theory.[6]

Supernumeraries are classified according to the morphology or location.

Classification based on morphology [9]

ConicalTuberculateSupplementalOdontomes.

Classification based on location [10]

MesiodensParamolarDistomolarPreparamolar.

Complications with supernumerary teeth include [10]

Prevention or delay of eruption of associated permanent teethDisplacement or rotation of permanent teethCrowdingIncomplete space closure during orthodontic treatmentDilaceration, delayed, or abnormal root development of associated permanent teethRoot resorption of adjacent teethComplications with the supernumerary itselfLate-forming supernumerary teeth.

Syndromes associated with supernumerary teeth [10]

Developmental disorders that show an association with multiple supernumerary teeth include

Cleft lip and palateCleidocranial dysostosisGardner's syndrome.

Less common disorders include Fabry Anderson's syndrome, Ehlers–Danlos syndrome, incontinentia pigmenti, and Trico Rhino-Phalangeal syndrome.

Treatment

Treatment of supernumerary teeth includes several controversies and varied opinions among authors, particularly with regard to the timing of removal. Rotberg [11] recommended removal of the supernumerary as soon as it has been discovered and ideally before the age of 5 years so that root formation of the associated permanent incisors is incomplete. However, Koch [5] stated that immediate removal of supernumeraries is not necessary if no pathology is present. Hogstrum and Andersson [12] suggested two options. The first option involves removal of the supernumerary as soon as it has been diagnosed. This could create dental phobia in a young child and can also cause devitalization or deformation of adjacent teeth. Second, the supernumerary could be left until root development of the adjacent teeth is complete. The potential disadvantages associated with this plan include loss of eruptive force of adjacent teeth, loss of space and crowding of the affected arch, and possible midline shifts. Devi et al.[13] stated that the earlier the offending supernumerary tooth is removed the, better will be the prognosis.

According to Garvey et al.,[9] extraction is not always the treatment of choice for supernumerary teeth. They may be monitored without removal if satisfactory eruption of related teeth has occurred, if no orthodontic treatment is required, if there is no associated pathology, and if removal would prejudice the vitality of the related teeth. According to Shah et al.,[10] if the supernumerary teeth cause no complications and are not likely to interfere with orthodontic tooth treatment, they can be monitored with yearly radiographic review. The patient should be warned of complications such as cystic change and migration with damage to nearby roots. If the patient does not wish to risk such complications, it is acceptable to remove the supernumerary teeth. If they are associated with the roots of permanent teeth, it may be apt to wait for full root development before surgical extraction to minimize the chances of root damage. Omer et al.,[14] suggested that if the supernumerary teeth do not cause any discernable adverse effects on adjacent teeth and if no future orthodontic treatment is foreseen, it is reasonable to recommend that immediate surgical intervention is not essential. Several other authors have also recommended a delayed or conditional removal which appears logical.[5] Furthermore Koch et al.[5] suggested that supernumerary teeth have a tendency to resorb and disappear if left untreated.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

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