Modificación de corona metálica preformada para rehabilitación de molar permanente con Hipomineralización Incisivo Molar moderada

Jazmín Mendoza Salazar; Andrea Ormeño Quintana; Gabriela Gasca Argueta

Authors

Jazmín Mendoza Salazar Universidad Autónoma del Estado de México
Andrea Ormeño Quintana Universidad de los Andes
Gabriela Gasca Argueta Universidad Autónoma del Estado de México

Keywords:

Adaptation, crowns, permanent dentition, incisor, pediatric dentistry

Abstract

Introduction: Molar Incisor Hypomineralization (MIH) is characterized by a qualitative defect of the enamel, caused by the alteration of calcification in the maturation of ameloblasts. Affected teeth often suffer from: hypersensitivity, poor esthetics, and rapid progression of cavities. Preformed metal crowns are malleable, inexpensive, durable, resistant, they relieve hypersensitivity, preserve occlusal contact, and have a high reported success rate. Making them ideal for teeth with multiple affected surfaces. Objective: To present the clinical case of rehabilitation of a first permanent molar with a modified preformed metal crown. Case presentation: Male patient aged 10 years 9 months, with moderate and multi-treated Molar Incisor Hypomineralization, presented to the Clínica de la Especialidad en Odontopediatría de la Universidad Autónoma del Estado de México, with extensive and defective restorations in organs 26 and 46, referring sensitivity. Organ 46 was restored with a preformed metal crown, modifying it by cutting the vestibular face in half to enlarge the cervical diameter and get its right fit and adaptation in the mouth. The crown on a plaster model was welded, polished and cemented with glass ionomer. Conclusion: The alteration made to the crown to enlarge its cervical diameter, allowed an adequate adjustment, gave back the masticatory function and maintained the remaining dental structure as much as possible. Preformed crowns for permanent teeth are not as easy to purchase, besides that they also have less variation in size than for primary teeth.

Author Biographies

Jazmín Mendoza Salazar, Universidad Autónoma del Estado de México

Introduction: Molar Incisor Hypomineralization (MIH) is characterized by a qualitative defect of the enamel, caused by the alteration of calcification in the maturation of ameloblasts. Affected teeth often suffer from: hypersensitivity, poor esthetics, and rapid progression of cavities. Preformed metal crowns are malleable, inexpensive, durable, resistant, they relieve hypersensitivity, preserve occlusal contact, and have a high reported success rate. Making them ideal for teeth with multiple affected surfaces. Objective: To present the clinical case of rehabilitation of a first permanent molar with a modified preformed metal crown. Case presentation: Male patient aged 10 years 9 months, with moderate and multi-treated Molar Incisor Hypomineralization, presented to the Clínica de la Especialidad en Odontopediatría de la Universidad Autónoma del Estado de México, with extensive and defective restorations in organs 26 and 46, referring sensitivity. Organ 46 was restored with a preformed metal crown, modifying it by cutting the vestibular face in half to enlarge the cervical diameter and get its right fit and adaptation in the mouth. The crown on a plaster model was welded, polished and cemented with glass ionomer. Conclusion: The alteration made to the crown to enlarge its cervical diameter, allowed an adequate adjustment, gave back the masticatory function and maintained the remaining dental structure as much as possible. Preformed crowns for permanent teeth are not as easy to purchase, besides that they also have less variation in size than for primary teeth.
Andrea Ormeño Quintana, Universidad de los Andes

Introduction: Molar Incisor Hypomineralization (MIH) is characterized by a qualitative defect of the enamel, caused by the alteration of calcification in the maturation of ameloblasts. Affected teeth often suffer from: hypersensitivity, poor esthetics, and rapid progression of cavities. Preformed metal crowns are malleable, inexpensive, durable, resistant, they relieve hypersensitivity, preserve occlusal contact, and have a high reported success rate. Making them ideal for teeth with multiple affected surfaces. Objective: To present the clinical case of rehabilitation of a first permanent molar with a modified preformed metal crown. Case presentation: Male patient aged 10 years 9 months, with moderate and multi-treated Molar Incisor Hypomineralization, presented to the Clínica de la Especialidad en Odontopediatría de la Universidad Autónoma del Estado de México, with extensive and defective restorations in organs 26 and 46, referring sensitivity. Organ 46 was restored with a preformed metal crown, modifying it by cutting the vestibular face in half to enlarge the cervical diameter and get its right fit and adaptation in the mouth. The crown on a plaster model was welded, polished and cemented with glass ionomer. Conclusion: The alteration made to the crown to enlarge its cervical diameter, allowed an adequate adjustment, gave back the masticatory function and maintained the remaining dental structure as much as possible. Preformed crowns for permanent teeth are not as easy to purchase, besides that they also have less variation in size than for primary teeth.
Gabriela Gasca Argueta, Universidad Autónoma del Estado de México

Introduction: Molar Incisor Hypomineralization (MIH) is characterized by a qualitative defect of the enamel, caused by the alteration of calcification in the maturation of ameloblasts. Affected teeth often suffer from: hypersensitivity, poor esthetics, and rapid progression of cavities. Preformed metal crowns are malleable, inexpensive, durable, resistant, they relieve hypersensitivity, preserve occlusal contact, and have a high reported success rate. Making them ideal for teeth with multiple affected surfaces. Objective: To present the clinical case of rehabilitation of a first permanent molar with a modified preformed metal crown. Case presentation: Male patient aged 10 years 9 months, with moderate and multi-treated Molar Incisor Hypomineralization, presented to the Clínica de la Especialidad en Odontopediatría de la Universidad Autónoma del Estado de México, with extensive and defective restorations in organs 26 and 46, referring sensitivity. Organ 46 was restored with a preformed metal crown, modifying it by cutting the vestibular face in half to enlarge the cervical diameter and get its right fit and adaptation in the mouth. The crown on a plaster model was welded, polished and cemented with glass ionomer. Conclusion: The alteration made to the crown to enlarge its cervical diameter, allowed an adequate adjustment, gave back the masticatory function and maintained the remaining dental structure as much as possible. Preformed crowns for permanent teeth are not as easy to purchase, besides that they also have less variation in size than for primary teeth.