Utilization of the modified Nance button for mandibular propulsion

Authors

  • Leiser Leiser Verano-Luis Universidad de Ciencias Médicas. Clínica Estomatológica Docente Provincial Dr. Justo Ortelio Pestana Lorenzo. Servicio de Ortodoncia. Sancti Spíritus, Cuba. https://orcid.org/0000-0003-0113-6578
  • Yenelis de la Rosa-Cabrera Universidad de Ciencias Médicas. Clínica Estomatológica Docente Provincial Dr. Justo Ortelio Pestana Lorenzo. Servicio de Ortodoncia. Sancti Spíritus, Cuba. https://orcid.org/0000-0002-0255-3667
  • Lizandro Michel Pérez-García Universidad de Ciencias Médicas. Clínica Estomatológica Docente Provincial Dr. Justo Ortelio Pestana Lorenzo. Servicio de Ortodoncia. Sancti Spíritus, Cuba. https://orcid.org/0000-0003-3111-0432
  • Osvaldo Jiménez-Marín Universidad de Ciencias Médicas. Clínica Estomatológica Docente Provincial Dr. Justo Ortelio Pestana Lorenzo. Servicio de Ortodoncia. Sancti Spíritus, Cuba. https://orcid.org/0000-0002-8385-0902

Abstract

Introduction: In the beginning, most of the functional appliances were removable, but the fixed ones are increasing every day. Their combination can increase the effectiveness in the treatment of mandibular retrognathymus.
Objective: To present the results of the treatment of a patient with mandibular retrognathism treated with the modified Nance button.
Case report: A 13-year-old female patient with convex profile, neuromuscular dysfunction, permanent dentition in both jaws with the presence of slight anterior crowding, bilateral distoclusion molar ratio of ½ unit, incisor protrusion and overhang of 6 mm, poor intermaxillary relationship caused by retrognathism of the mandible and little remnant of active mandibular growth. The first stage of treatment included psychotherapy, myotherapy and mandibular advancement with a fixed functional appliance (modified Nance button for mandibular propulsion). Nine months after starting the treatment, the change in the intermaxillary relationships in the anteroposterior direction was verified, with a decrease in the ANB angle to 20 and an increase in the SNB to 78, as a reflection of a good relationship of the bone bases due to mandibular growth.
Conclusions: One year after treatment with the modified Nance button for mandibular propulsion, a correct relationship of the patient's bone bases was achieved.

DeCS: ORTHODONTICS/instrumentation; JAW ABNORMALITIES; ACTIVATOR APPLIANCES; MALOCCLUSION, ANGLE CLASS II; ORTHODONTIC APPLIANCES, FIXED.

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Published

2022-04-23

How to Cite

1.
Leiser Verano-Luis L, de la Rosa-Cabrera Y, Pérez-García LM, Jiménez-Marín O. Utilization of the modified Nance button for mandibular propulsion. Arch méd Camagüey [Internet]. 2022 Apr. 23 [cited 2025 Oct. 2];26:e8336. Available from: https://revistaamc.sld.cu/index.php/amc/article/view/8336

Issue

Vol. 26 (2022): (publicación continua)

Section

Case Reports

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