ABSTRACT
Introducción: El término kissing molars se traduce como «dientes besándose¼; superfi cies oclusales de dos molares retenidos están en contacto una con otra en espacio folicular único y raíces en dirección contraria. Literatura científi ca ha reportado 44 casos. Cuartos molares o distomolares, supernumerarios que se forman distalmente a terceros molares; tamaño y forma variable, generalmente retenidos. Caso clínico: Femenino de 32 años con molestias en zona retromolar inferior izquierda, limitación de apertura, trismus, disfagia. En ortopantomografía, se observa cuarto molar retenido junto con tercer molar, superfi cies oclusales de ambos órganos dentarios retenidos en íntimo contacto dentro de un mismo saco folicular, raíces en dirección opuesta. Discusión: Existe controversia acerca de diferencia entre molares retenidos y KM, algunos autores sugieren que la ausencia de contacto entre dos molares retenidos no permite incluirlos en esta condición. Etiología aún incierta, algunos lo consideran como un evento aislado. Existe una teoría en relación con la formación de quiste dentígero; resorción ósea causada por presencia y expansión de éste, resulta en pérdida de hueso en zona mesial de molares retenidos facilitando movilización, inclinación y contacto uno con otro (AU)
Introduction: The term kissing molars is used when the occlusal surfaces of two retained molars are in intimate contact inside the same follicular sack and roots in opposite direction. Literature has reported 44 cases. Fourth molars, also known as distomolars, are a supernumerary tooth that grows distally to third molars; size and shape are variable, generally retained. Case report: Female 32 years old, pain in the left inferior retromolar zone, trismus, dysphagia. Fourth and third retained molars, with occlusal surfaces in contact, inside the same follicular sack, roots in opposite direction are observed in orthopantomography. Discussion: There is controversy about the diff erence between retained molars and KM, some authors suggest that the absence of contact between two retained molars, does not allow to include them in this condition. Etiology still unknown. Dentigerous cyst formation theory is proposed due to the bone resorption in the mesial zone of retained molars in this entity, which facilitates mobilization and contact between molars (AU)
Subject(s)
Humans , Female , Adult , Tooth Eruption, Ectopic , Tooth, Impacted , Tooth, Supernumerary , Molar/abnormalities , Diagnostic Imaging , Radiography, Panoramic , Treatment RefusalABSTRACT
Supernumerary teeth are those teeth present in addition to the normal number of teeth and are mostfrequently seen in the maxillary incisors and molar regions. In the molar regions, supernumerary teethare divided into two types depending on their location: distomolars and paramolars. Distomolarsusually occur in the form of a fourth molar distal to the third molar. Distomolars are a developmentalanomaly and have been argued to arise from a combination of genetic and environmental factors.Therefore, distomolar management should be part of a comprehensive treatment plan. This articlepresents a case report of an unusual occurrence of a rare unilateral distomolar in the right of themaxilla with multiple abnormalities in a 21-year old healthy subject. In addition, a mini literaturereview includes the definition, types, prevalence, classification, etiology, complications, diagnosis,and therapeutic strategies, which may be adopted in the occurrence of distomolars.
ABSTRACT
Resumen: El cuarto molar, también llamado distomolar, es una variante de número y forma que se presenta como una alteración durante la odontogénesis, pueden ser eumórfico o dismórfico, único o múltiple, erupcionado o retenido, de forma unilateral o bilateral y se puede presentar en ambos maxilares. La etiología es desconocida, pero existen varias teorías que justifican el desarrollo de esta alteración dentaria como la duplicación de la lámina dental, su proliferación horizontal o hiperactividad de ésta; otros factores pueden ser los hereditarios, la división completa del germen dentario o regresión filogenética. El cuarto molar se encuentra en un espacio muy importante, que al desconocer su existencia o técnica adecuada para su extracción, las posibilidades de tener severas complicaciones transy postoperatorias son altas. Se realiza una revisión bibliográfica de diferentes artículos y textos en diferentes años para determinar de forma más clara el origen y formación de este diente supernumerario.
Abstract: Fourth molars, also called distomolars, are a variant in shape and number appearing as alterations during odontogenesis. They can be eumorphic or dismorphic, single or multiple, erupted or impacted, unilateral or bilateral, and can appear in both jaws. They are of unknown etiology, but there are several theories to justify these tooth alterations such as dental lamina duplication, its horizontal proliferation or its hyperactivity. Other factors can be hereditary factors, full division of tooth bud or phylogenetic regression. Fourth molars are found in a very important space, and when their own existence or the suitable extraction techniques are unknown, severe complications can frequently occur during and after surgery. A literature review was undertaken, examining different articles and texts of different years, in order to better determine the origins and formation of this supernumerary tooth.
ABSTRACT
Th e report presents a case of a rarely occurring totally impacted two bilateral maxillary distomolar and single bilateral mandibular distomolar. Th e appearance of supernumerary teeth is a relatively uncommon dental anomaly and it is rare for patients to have six impacted distomolars. Th e aim of this case report is to describe the presence of bilateral distomolars in the maxilla and mandible in a young female patient aged 19 years. Orthopantomogram revealed impacted six bilateral distomolars. Following orthodontic treatment, the patient was referred for removal of distomolars along with all the four impacted third molars under local anesthesia.
ABSTRACT
Los dientes supernumerarios en la región del tercer molar inferior sonpoco frecuentes. Cuando se presentan en posición distal se les denominadistomolares o distodens. Algunos autores los denominan cuarto molar; ésta denominación es la menos aceptada, ya que el cuarto molarno forma parte de la fórmula dental permanente, sino que es un dientesupernumerario. Cuando éste se presenta paralelo a los molares, en lacara externa o interna de la mandíbula, se denomina paramolar. El manejo quirúrgico suele ser complejo y requiere consideraciones especiales. Presentamos dos casos de dientes supernumerarios en la región del tercer molar: distomolar y paramolar; describimos su diagnóstico, etiología y la técnica quirúrgica empleada.
Supernumerary teeth in the lower third-molar region are rare. When these are located in the region posterior to the third molar, they are known as ®distomolars¼ or ®distodens¼. Some authors refer to them as ®fourth molars¼, a term that is somewhat less accepted due to the fact that the fourth molar is not part of the permanent dentition, but rather a supernumerary tooth. When a distomolar occurs parallel to the molars, either on the outer or inner surface of the jaw, it is known as a ®paramolar¼. Surgical management is often complex and requires special considerations. We report two cases of supernumerary teeth in the third-molar region, one distomolar and one paramolar, and describe their diagnosis, etiology, and the surgical technique employed.
Subject(s)
Humans , Male , Adult , Young Adult , Tooth, Supernumerary/surgery , Tooth, Supernumerary/etiology , Molar, Third/abnormalities , Dental Service, Hospital , Tooth, Supernumerary/diagnosis , Tooth Extraction/methods , Mexico , Osteotomy/methods , Surgical FlapsABSTRACT
Distomolars are supernumerary teeth present distal to third molars. Although many cases of bilateral fourth molars are reported, very few cases having bilateral fifth molars are described in literature. Here, we present a case having bilateral impacted maxillary fourth and fifth molars with the fifth molar on the left side having an unusually small appearance.
ABSTRACT
Aim: To give notation for quadrants, tooth position, and the type of supernumerary teeth for both permanent and deciduous dentition. Tooth numbering provides dentists with an essential shortcut in clinical record keeping. Materials and Methods: Three systems are favored worldwide: the Zsigmondy/Palmer system, the Universal system, and the Federation Dentaire Internationale (FDI) Two-Digit system. Histories of all tooth-numbering methods were traced and the strengths and deficiencies of each system were reviewed. The FDI Two-Digit system is widely used throughout the world, except USA, and is the only method that makes the visual sense, cognitive sense, and computer sense. Conclusion: On review it was noticed that all tooth notation systems in vogue have a drawback as they do not provide any information or notations for supernumerary teeth such as paramolar, distomolar, mesiodens, and fused teeth.