APPLICATIONS OF REPRAP THREE-DIMENSIONAL PRINTERS IN DENTISTRY- A LITERATURE REVIEW

Purpose – This paper is intended to summarize the current available literature in which low-cost, open-source RepRap 3D printers are incorporated in the field of dentistry in an attempt to improve or replace conventional clinical and/or laboratory procedures. Methodology– An electronic search of publications from January 2004 to July 2014 was performed, by two researchers, in two electronic databases: Medline (PubMed) and EMBASE Library. All searches were limited to human subjects investigations, published in English. Search terms included general and specific terms from the field of dentistry and additive manufacturing. Findings – The contribution of RepRap 3D printers to the field of dentistry is so far limited to only two applications, respectively reconstruction of study models for orthodontic measurements and reconstruction of skull segments. Originality/value – This review brings focus on the few researches and applications of low-cost RepRap printers in the dental field. In spite of the promising results reported, there still remains a sizable sector in which the capabilities of these low-cost, open source 3d printers are to be tested

THE NEED FOR ORAL REHABILITATION IN OPEN BITE

Aim of the study .The open bite is a part of dentomaxillary anomalies and is classified by anatomic open bite and functional open bite. In this study, we demonstrated the frequency of the open bite , the dysfunctional factors involved as well as the etiopathogenesis of the anomaly. Materials and methods. We did a retrospective study for a group of 290 patients who were treated at the clinic Orthodontics “Iuliu Haţieganu” Cluj Napoca (2015-2017). The study was based on data collected from completed forms for each patient. Results. The data were systematized in tables and were subjected to statistical analysis. Our study focuses on a group of 290 patients of which 26 (9%) have an open bite, and 264 patients (91%) have other dentomaxillary anomalies. Conclusions . Prophylaxis means and interception will eliminate dysfunctional factors and ensure the normal development of the dentomaxillary apparatus

Comparative assessment of bone regeneration by histometry and a histological scoring system / Evaluarea comparativă a regenerării osoase utilizând histometria și un scor de vindecare histologică

Obiective: Scopul studiului de față a constat în evaluarea valorii scorului de vindecare histologică, comparativ cu histometria în monitorizarea vindecării osose la nivelul calotei. Material și metodă: Am realizat un studiu cazcontrol cu un lot control și unul de studiu. La un număr de 60 de șoareci CD1 incluși în lotul de studiu am indus chirurgical un defect osos la nivelul calotei și am realizat reconstrucția defectului utilizând grefe obținute prin inginerie tisulară. Ingineria tisulară a grefonului osos s-a realizat utilizând celule stem embrionare poziționate pe suport matriceal -corn caduc de cerb, iar ca inductor al diferențierii am utilizat mediu osteogenetic bazal și complex. La cei 30 de șoareci CD1 incluși în lotul control am indus chirurgical același defect osos la nivelul calotei, dar nu am realizat reconstrucția osoasă a acestuia. Procesul de regenerare osoasă a fost evaluat la 2 și respectiv la 4 luni utilizând scorul de vindecare și histometria. Rezultate: Scorul de vindecare histologică s-a corelat statistic semnificativ cu dimeniunea defectului obtinută la histometrie (p<0.001). Evaluarea parametrilor în baza cărora s-a stabilit scorul de vindecare histologică indică regenerarea cea mai avansată la subiecții din lotul de studiu sacrificați la 4 luni, la care s-a utilizat pentru ingineria grefonului osos celule stem embrionare, suport matriceal corn caduc de cerb și mediu osteogenetic complex ca inductor. Concluzii: scorul de vindecare histologică este o metoda valoroasă de cuantificare a procesului de regenerare osoasă. Relevanță clinică: Acest studiu demonstrează că scorul de vindecare histologică prezentat este un instrument util pentru clinician în procesul de evaluare a regenerării osoase

Radiological Aspects of BRONJ after Dental Extractions in Ovariectomized Female Wistar Rats

Experimental study in animal model - female Wistar rats – using two types of bisphosphonates (ibandronic acid and denosumab) for treating osteoporosis induced by ovariectomy, performing extractions in the maxillary central incisors and occurance of bisphosphonates related osteonecrosis of the jaw (BRONJ) after the dental extractions. The appearance of BRONJ in female Wistar rats which had undergone ovariectomy in advance and received two types of bisphosphonates and a comparison between 3 groups show that BRONJ it is first diagnosticated radiological, before it is first signs in oral cavity. Therefore, careful monitoring of patients undergoing bisphosphonate therapy is essential in the clear and accurate diagnosis of BRONJ. According to the experiment conducted by us, the administration of this class of bisphosphonates has antibacterial effects, decrease osteoclasts activity and thus decrease the bone resorption, but as a secondary main effect it induces BRONJ after performing routine dental surgeries

ETIOPATHOGENESIS OF FACIAL PARALYSIS. IATROGENESIS IN THE DENTAL OFFICE

The etiopathogenesis of facial paralysis is extremely varied, from local causes to general disorders, including the side effects of some drug treatments. Iatrogenic facial paralysis induced in the dental office or during oromaxillo-facial surgery should not be neglected. Iatrogenic facial palsy in the dental office is illustrated by a case report. In order to avoid these situations, the dentist should have a good competence for the adequate management of patients with facial paralysis in the dental office

ORAL INTERDISCIPLINARY REHABILITATION IN THE CONTEXT OF NUMERICAL DEFICIT DENTAL ABNORMALITIES

Objectives: The purpose of this study was to track the frequency of agenesis in a group of children and adolescents who underwent treatment at the Orthodontic Clinic in Cluj-Napoca between 2014 and 2017. Material and Method: We studied a group of 700 children aged 7-18 years. Classification was based on gender, clinical abnormalities, teeth, associated anomalies. Results: In our study, 4% of patients had at least one dental agenesis, the upper lateral incisors being the most frequently affected (47%). In terms of gender, the female was affected with a higher percentage (69%). Conclusions: Treatment of hypodontia is often an individualized interdisciplinary treatment, depending on the severity of the anomaly and associated general disease

Patient-centered outcomes after subepithelial connective tissue grafts and coronally advanced flaps

The use of a coronally advanced flap (CAF) and connective tissue graft (CTG) is a well-established procedure to cover single and multiple recessions and improve soft tissue esthetics. However, until now, there are still limited data evaluating patient morbidity, the fear of imminent tooth loss, and modification of sensitivity in surgical areas. The aim of the present study was to evaluate the patient-centered outcomes associated with CAF + CTG

EVALUATION OF RISK FACTORS IN PATIENTS WITH FACIAL PARALYSIS IN DENTAL PRACTICE

Facial palsy and paralysis causes facial asymmetry, with negative effects on the functions of the stomatognathic system and on the quality of life of the affected patients. These patients have multiple risks in the dental office because of the extremely diverse etiological factors that can be found in facial paralysis. This paper addresses clinical aspects of central and peripheral facial paralysis, with examples of clinical cases and differential diagnosis of these disorders. The risks that the dentist should evaluate in the patient with facial paralysis and the way in which these can interfere with dental treatment are also considered

Histopathological and clinical expression of periodontal disease related to the systemic inflammatory response

Periodontal disease with its systemic implications is highly prevalent among the population, and this correlation could have an impact on the quality lives of many humans. The purpose of this study was to assess the clinical and histopathological changes of the periodontium correlated with the systemic inflammatory response in periodontal disease. An experimental study was performed on male Wistar rats which were subjected to a procedure of periodontitis induction through placing silk thread ligatures around the lower incisors, under general anesthesia. Clinically, the changes of the periodontal tissue induced by the periodontitis progression were daily assessed. Two blood samples were obtained from each animal, at baseline and on completion of the experiment. The plasma level of the cytokine IL-6 and haematological parameters such as leukocytes, neutrophils, lymphocytes, monocytes, and platelets were determined. After seven days the animals were sacrificed, and samples were prepared for histological evaluation. Clinical manifestations such as changes in the color, contour and consistency of the gingival tissue and the bleeding on probing were registered. Histopathological analysis showed an intense inflammatory cell infiltration, the presence of osteoclasts and an obvious bone resorption activity. A significant increase in IL-6 values during the progression of periodontitis in rats (p<0.001) was also observed. The results of this research demonstrated that the clinical and histological changes in the rat’s periodontium are correlated with a notable systemic inflammatory response. Therefore, periodontitis control can be inserted as part of the programs of systemic disorders prevention, in clinical practice

ASSESSING PATIENT SATISFACTION WITH IMPLANT PROSTHETIC WORK. A PRELIMINARY QUESTIONNAIRE-BASED STUDY

Objective. To evaluate the quality of life of edentulous patients with implant prosthetic work. Methods. Retrospective study, between 2015 and 2016, with a group of 50 patients in the over-implantation phase. Patients responded to a satisfaction questionnaire following overdenture prosthesis. Results. Overdenture has improved the quality of life of patients by regaining their self-esteem, regaining the aesthetic, phonetic and mastication functions, as well as the possibility of using a solid consistency diet without the occurrence of pain. Conclusion. The use of overdenture prosthesis is a treatment that gives patients satisfaction from all points of view (functional, psychological, aesthetic and economic). To reflect the reality, future studies will need to obtain information from a larger number of subjects from different backgrounds, being treated in different clinics