Dental arch defects represent one of the most complex interdisciplinary problems in modern restorative and rehabilitative dentistry due to their significant impact on orofacial esthetics, masticatory function, and psychosocial well-being. Esthetic disturbances associated with missing teeth are not limited to visible dental asymmetry but extend to alveolar bone resorption, soft tissue collapse, facial disharmony, and occlusal instability. The present theoretical and analytical review aims to systematize current scientific knowledge regarding the diagnosis of esthetic disorders in patients with dental arch defects and to substantiate the principles of comprehensive rehabilitation based on anatomical, histological, biomechanical, and statistical data. Particular attention is given to trauma-related tooth loss as a globally relevant etiological factor, supported by epidemiological trends reported in contemporary scientific literature. Diagnostic criteria are analyzed from the perspective of facial proportions, smile analysis, periodontal biotype, and alveolar ridge morphology. Rehabilitation strategies are discussed as a complex, staged process integrating prosthetic, orthodontic, and functional concepts. This review highlights the necessity of evidence-based diagnostic frameworks to optimize esthetic outcomes and long-term stability in dental rehabilitation.

dental arch defects; esthetics; rehabilitation; diagnosis; trauma; alveolar bone; smile analysis; occlusion; prosthodontics; morphology; biomechanics; epidemiology

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