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Introduction. Prosthetic restoration of single tooth edentation produced by the loss of the permanent first molar (6-year molar), regardless of its location (maxillary or mandibular), represents a challenge for any dentist. Purpose. In this study we tried to present some theoretical and practical aspects regarding the advantages of implant-prosthetic rehabilitation, regarding the advantages of implant-prosthetic rehabilitation compared to the classic prosthetic rehabilitation, for the restoration of the 6-year molar single tooth edentation, taking into account both the opinions of the dentists and the preferences of the patients. Material and method. The study was conducted between April 15 and June 30, 2018 on a group of 39 dentists, based on a questionnaire with 8 questions. Results and discussion. The results obtained from the analysis of the answers given to the 8 questions, have been exposed in a varied iconography for easier understanding. Conclusion. The most important aspect of this study is that most practitioners have recommended fixed prosthetic restorations on implant support, because of their superior advantages, compared with fixed prosthetic restorations with aggregation on the teeth bordering the edentulous breach.

The development of the dento-maxillary system from the very beginning to the age of 12 implies a multitude of changes in the structure of this system. In the age of growth a sequence of deviations from the morphology and function of the dento-maxillary system appear. Purpose. In this paper, we have approached certain aspects of both theoretical and practical aspects that may intervene in the formation and development of dento-maxillary system in preschool age (up to 6 years). Material and methods. 75 dental practitioners from of different specialities from Bucharest were involved in this study between April 15 and May 20, 2018. To carry out a relevant survey a 6 items questionaire was used. Result and discussions. The results obtained were structured for a better understanding and to have a clear view for further study directions. Conlcusions. The dentist have the most important role in detecting disturbances that may have a negative effect on formation and development of dento-maxillary system and also is the one who guide prophylactic actions of preschool age children to avoid negative effect on dento-maxillary system.

Dental medicine is an extremely complex medical field, comprising several specialties (orthodontics and dentofacial orthopedics, prosthodontics, dental surgery, endodontics etc.), which in most cases also require the assistance of a dental nurse. Purpose. In this paper, we have tried to present a number of very interesting ergonomic aspects in the dental office, which aim at simplifying work at this level. Material and method. This study was conducted between May and July 2018 using a questionaire applied to a number of 69 dental practitioners from Bucharest. Results and discussions. Results obtained in this study give us an image about how current dental practitioners understand ergonomics in daily practice. Conlclusions. All the aspects discussed in this study have an important role in the ergonomy of daily activity of a dental office. More important is that the majority of dentists involved in the stuty understand and apply the ergonomic concepts underlined by this study.