Prevalence and Incidence of Gemination and Fusion in Maxillary Lateral Incisors in Odisha population and Related Case Report

Jena, Amit

doi:10.7860/jcdr/2013/5677.3516

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…The etiology is unknown; presumed contributing factors are an evolutionary trend, trauma, environmental factors, and a hereditary component (Schuurs and van Loveren, 2000 ; Shashirekha and Jena, 2013 ; Hattab, 2014 ). Double teeth occur as two distinct entities which are referred to as gemination (with a prevalence of about 0.08–2.5%) and fusion (with a frequency of 0.1–0.85%; Shashirekha and Jena, 2013 ; Hattab, 2014 ). Gemination denotes a form of double teeth originating from the union of a regular and a supernumerary tooth, i.e., it reflects the incomplete splitting of one tooth germ.…”

Section: Disorders Of Root Development Associated With a General Tootmentioning

confidence: 99%

Malformations of the tooth root in humans

Luder

2015

Front. Physiol.

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The most common root malformations in humans arise from either developmental disorders of the root alone or disorders of radicular development as part of a general tooth dysplasia. The aim of this review is to relate the characteristics of these root malformations to potentially disrupted processes involved in radicular morphogenesis. Radicular morphogenesis proceeds under the control of Hertwig's epithelial root sheath (HERS) which determines the number, length, and shape of the root, induces the formation of radicular dentin, and participates in the development of root cementum. Formation of HERS at the transition from crown to root development appears to be very insensitive to adverse effects, with the result that rootless teeth are extremely rare. In contrast, shortened roots as a consequence of impaired or prematurely halted apical growth of HERS constitute the most prevalent radicular dysplasia which occurs due to trauma and unknown reasons as well as in association with dentin disorders. While odontoblast differentiation inevitably stops when growth of HERS is arrested, it seems to be unaffected even in cases of severe dentin dysplasias such as regional odontodysplasia and dentin dysplasia type I. As a result radicular dentin formation is at least initiated and progresses for a limited time. The only condition affecting cementogenesis is hypophosphatasia which disrupts the formation of acellular cementum through an inhibition of mineralization. A process particularly susceptible to adverse effects appears to be the formation of the furcation in multirooted teeth. Impairment or disruption of this process entails taurodontism, single-rooted posterior teeth, and misshapen furcations. Thus, even though many characteristics of human root malformations can be related to disorders of specific processes involved in radicular morphogenesis, precise inferences as to the pathogenesis of these dysplasias are hampered by the still limited knowledge on root formation.

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Section: Disorders Of Root Development Associated With a General Tootmentioning

confidence: 99%

Malformations of the tooth root in humans

Luder

2015

Front. Physiol.

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“…[ 6 ] Shashirekha and Jena in their survey for dental anomalies with respect to maxillary lateral incisor in Odisha (India) population of 1062 subjects (15-30 years) found the prevalence of fusion to be 0.18%. [ 7 ] There is no gender predilection. Fused teeth have predilection for mandible over maxilla, unilateral (0.05%) over bilateral (0.02%), and deciduous (0.5%) over permanent dentition (0.1%).…”

Section: Discussionmentioning

confidence: 99%

Incidental finding of two rare developmental anomalies: Fusion and dilaceration: A case report and literature review

Sultan

2015

J Nat Sc Biol Med

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A number of developmental anomalies of morphology are there. However, as compared to the more common oral diseases like caries or periodontal problems, they account for a relatively lower number. When present, they may pose various problems of esthetic, function, malocclusion, or possible disposition to other oral problems. Hence, though rare, their timely diagnosis is very vital in proper treatment planning to avoid unseen complications during extractions, endodontic or orthodontic treatment. The present case is of a patient reporting with two very rare developmental anomalies, that is, fusion and root dilaceration, in contralateral sides of the same patient. To the knowledge of the author, reportedly it is the first such case. The terminologies, etiology, and epidemiology of both these anomalies are also discussed.

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“…Although gemination can also occur in premolars and molars, it is more common in anterior teeth [16]. In most cases, the geminated tooth has a bifid crown with a single root and a single root canal and may cause aesthetic and functional impairments.…”

Section: Introductionmentioning

confidence: 99%

Geminated Maxillary Lateral Incisor with Two Root Canals

Romano

Souza-Flamini

Mendonça

et al. 2016

Case Reports in Dentistry

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This paper reports a case of gemination in a maxillary lateral incisor with two root canals and crown-root dilaceration. A 16-year-old male patient was referred for endodontic treatment of the maxillary left lateral incisor and evaluation of esthetic and functional complaints in the anterior region. The patient reported trauma to the anterior primary teeth. There was no spontaneous pain, but the tooth responded positively to the vertical percussion test and negatively to the pulp vitality test. Clinical examination showed esthetic and functional alterations and normal periodontal tissues. CBCT imaging confirmed the suspicion of gemination and crown-root dilaceration and also revealed the presence of two root canals and periapical bone rarefaction. The root canals were instrumented with Reciproc R40 and 1% NaOCl irrigation and were filled by lateral condensation of gutta-percha and AH Plus sealer. The tooth was definitely restored with composite resin to recover esthetics. Continued follow-up over 6 months has shown absence of pain or clinical alterations as well as radiographic image suggestive of apical repair.

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Prevalence and Incidence of Gemination and Fusion in Maxillary Lateral Incisors in Odisha population and Related Case Report

Cited by 8 publications

References 16 publications

Malformations of the tooth root in humans

Malformations of the tooth root in humans

Incidental finding of two rare developmental anomalies: Fusion and dilaceration: A case report and literature review

Geminated Maxillary Lateral Incisor with Two Root Canals

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