To produce prostheses through the digital flow, it is essential to transfer the correct patient’s interocclusal relationship to the digital software program, enabling the articulation of virtual models. Therefore, the aim of this study was to carry out a narrative literature review to describe and discuss aspects related to the virtual occlusal record realization, as well as its precision and accuracy in different clinical situations. Searches for scientific publications were performed in different databases and only articles in English related to the topic were selected. Different methods for the alignment of virtual models are described in the literature, the main one being the scanning of the patient in occlusion, usually in a position of maximum intercuspation. However, this technique may demonstrate disagreement with the patient's actual occlusal relationship due to several factors, and therefore studies were carried out to verify the precision and accuracy of these records. Most studies use plaster models and industrial scanner to capture the record, with few studies performed with intraoral scanner in patients. Despite the various scanner systems available and the different ways of evaluating them, in general, the studies show an adequate precision and accuracy of virtual occlusal records of dentate models. However, the absence of dental elements is related to the lower accuracy of these records, it being necessary to establish an appropriate method of scanning for these clinical situations.
Maintenance of pulp functional integrity should be aimed by the treatment of trauma affected immature permanent teeth. The prognosis of vital pulp therapies (VPT), when well indicated and correctly performed, not only preserves pulp vitality but also provides the immature root development. This case reports the treatment of a patient with a crown fractured immature maxillary right central incisor. Clinical examination, radiographic inspection and sensitivity tests confirmed tooth vitality. In spite of the superficial micro abscess presence, pulpotomy was the treatment of choice according to the pulp vitality characteristics found during the undergoing surgery. Root development and apical closure were verified at the 1st year radiographic control. After 3 years of follow-up, even with the occurrence of 3 new traumatisms, the treated tooth showed radiographic sound characteristics. Nevertheless, on the fourth-year return, the conventional endodontic treatment had to be carried out due to radiographic signal of initial root obliteration. It was concluded that pulp vitality diagnosis step and clinical-radiographic follow-up are extremely important for the pulpotomy outcome. This conservative approach resulted in success since it induced root development and apical closure, permitting the posterior execution of the endodontic therapy.
Anophthalmia is mainly caused by two etiological groups, trauma and medical conditions. In addition, anophthalmia creates difficulties in social, professional, and family adaptation due to psychological, and functional disorders related to eye loss. Studies show a positive influence on the personal relationship of patients with anophthalmia after being rehabilitated with ocular prostheses. However, in order to achieve a good aesthetic result in prosthetic eye rehabilitation, it is essential that the size and positioning of the orbital skeleton are adequate. Facial trauma can also cause defects associated with bone loss, and in these cases, reconstructive techniques aim to restore the appropriate bone contour. The aim of this work is to report a case where reconstructive treatment was performed on a patient victim of a long-term traffic accident sequel, using an alloplastic implant in polymethylmethacrylate (PMMA) and bone repositioning, so that an ocular prosthesis could be made. At the end of the treatment, after reconstruction of the frontal-nasal region in PMMA and repositioning of the left zygoma, the aesthetic objectives were achieved and the patient improved his self-esteem and social life.
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