Romanian Journal of Oral Rehabilitation Vol. 10, No. 4 October- December 2018 71 INTERDISCIPLINARY APPROACH IN THE TREATMENT OF CONGENITALLY MISSING LATERAL INCISOR Daniela Anistoroaei 1 , Cătălina Iulia Săveanu 2* , Loredana Golovcencu 1* , Eduard Radu Cernei 3 , Georgeta Zegan 4 „Gr. T. Popa“ U.M.Ph. - Iasi, Romania, Faculty of Dentistry, Department of Surgery * Corresponding author, e-mail: daniulia05@yahoo.com and lgolovcencu@yahoo.com ABSTRACT In dentistry treatment of difficult cases may be accomplished using an interdisciplinary approach. This article describes the orthodontic treatment in a female patient (12-years old) which was diagnosed with congenitally missing of upper left lateral incisor and Angle’s Class III malocclusion. The treatment plan was interdisciplinary using preprosthetic orthodontic treatment for facilitate the surgical, implant and restorative treatment. The treatment were favorable, fulfilled the patient expectation and improving facial esthetics and restoring the functions. This case demonstrates that an interdisciplinary team (orthodontist, dental surgeon, prosthodontist) is required for the successful treatment of the congenitally missing of lateral incisor to create ideal conditions for the insertion of the dental implant. Key words: orthodontics, prosthodontics, interdisciplinary approach, congenitally missing lateral incisors INTRODUCTION Currently dentists are facing a growing aesthetic demand from patients. This often requires an interdisciplinary approach to assess, diagnose and treating existing problems through a combination of orthodontic, periodontal, surgical and prosthodontic treatments 1. In many cases obtaining favorable results in aesthetic restorations depends on the position of the teeth, the clinical dimensions of the crowns, the gingival architecture. Communication between disciplines is essential to achieving improved aesthetic results 2. Interdisciplinary treatment can ensure success in difficult cases. For example, the collaboration between the orthodontist and the prosthodontist is beneficial in cases requiring to achieve the parallelism of the teeth, their favorable distribution and repositioning within the dental arch, in order to allow the physiological distribution of the masticatory forces and the optimal prosthetic restoration 3. One of the most common situations that require collaboration between the orthodontist and the prosthodontist is the treatment of congenitally missing of the upper lateral incisors which often compromises smile esthetics 4. Most patients presenting this dental anomaly need and seek orthodontic and prosthetic treatment for restoring edentulous spaces with prosthodontic treatment (removable partial dentures, conventional fixed bridges, resin-bonded bridges, single-tooth implant) 3. The aim of this paper is to present and evaluate the result of the collaboration between the orthodontist and the prosthodontist in solving a complex case with congenital missing lateral incisors. This interdisciplinary approach involved preprosthodontic orthodontic treatment for facilitate the surgical, implant and restorative treatment. CASE REPORT AA, girl, 12 years asked for orthodontic