Interceptive treatment of Angle class III malocclusion through temporary prosthetic rehabilitation with functionally guided overlay crowns

Abstract

Abstract Background. Class III Angle malocclusion represents a major challenge in modern orthodontics due to its multifactorial etiology, clinical variability, and increased risk of relapse during the growth period. Early diagnosis and interceptive intervention are essential for guiding craniofacial development and reducing the complexity of subsequent treatment. Among the objectives of orthodontic treatment are the correction of anterior crossbite, elimination of functional dysfunctions, and creation of favorable conditions for harmonious development of the maxilla and mandible, thus contributing to the balanced formation of the stomatognathic system. Objective of the study. To highlight the particularities of interceptive treatment of Class III Angle malocclusion using temporary prosthetic restoration in mixed dentition, employing functionally guided partial crowns. Material and Methods. The study is based on a synthesis of the scientific literature and on clinical experience gained in the interceptive treatment of children with Class III malocclusion. The method consists of the use of acrylic overlay crowns that cover the occlusal surfaces, increase the vertical dimension of occlusion (VDO), eliminate occlusal interferences, and facilitate the “occlusal jump By rotating the occlusal plane and repositioning the mandible posteriorly and superiorly, favorable conditions are created for functional reorganization of the temporomandibular joint (TMJ) and harmonious jaw development. The method was applied to a 6-year-old patient in early mixed dentition diagnosed with mandibular prognathism and anterior crossbite. Cephalometric investigations confirmed a tendency toward skeletal Class III malocclusion. Treatment included professional cleaning, intraoral scanning, digital planning, and fabrication of functionally guided partial crowns using specialized software. Results. After treatment, improvement of the facial profile, harmonization of facial thirds, and achievement of Class I molar and canine relationships with controlled overcorrection were observed. The method ensured occlusal stability and superior functional and esthetic comfort compared to conventional interceptive methods. Conclusions. Interceptive treatment guided by overlay crowns represents an effective and minimally invasive alternative for early management of Class III malocclusion, promoting physiological adaptation of the stomatognathic system and harmonious craniofacial growth guidance.