Luminita Oancea

• PhD
• Lecturer at Carol Davila University of Medicine and Pharmacy

The treatment of maxillofacial defects presents significant challenges due to the complexity of facial anatomy and the diversity of affected tissues. Traditional workflows are labor-intensive, costly, and limited in customization. Recent advancements in fully digital workflows and direct 3D printing technologies offer new possibilities for improvin...

Purpose This study aimed to evaluate the impact of substrate material, esthetic material type and thickness, and cement shade on the final color reproduction of implant-supported fixed restorations. The goal was to identify optimal combinations for achieving clinically acceptable esthetic outcomes. Material and methods An in vitro study was condu...

(1) Background: This systematic review intends to answer the following Patient–Intervention–Comparison–Outcome (PICO) question: Do digital impression systems generate significant errors during scanning in extensive implant restorative treatments? (2) Methods: Following the PRISMA protocol and according to predefined inclusion criteria, two trained...

The success of complex prosthodontic treatment is believed to be conditioned by condylar path replication in the articulator, as there is a continuing debate in the scientific community regarding the anatomical relationship between joint and dental morphology. The purpose of this study was to investigate the potential correlation between incisal an...

This paper presents a method for the digital transfer of the upper maxillary arch position using a facebow, a transfer table, and a reference block with a CAD application without requiring physical casts mounted with articulating gypsum. This technique facilitates the prosthetic digital workflow when the impression is made via intraoral scanning, t...

Obtaining an extremely precise virtual model is decisive for the final success of prosthetic restorations on implants using CAD–CAM technology. Intraoral digital implant impression can be challenging under specific conditions (e.g., narrow spaces, lack of visibility, or subgingival margins) because sometimes the scan body does not reach an optimal...

Featured Application This study will inform the clinicians, the dental technicians and the companies with research, production and trade activity about the current preferences for various materials, protocols and designs for fixed prosthesis with implant support and about the different perspectives on the current workflow. Abstract (1) Background:...

Purpose: Altering the tooth morphology is a frequent clinical situation and it requires replacing the lost tooth substance by direct/indirect treatment methods. The purpose of this study is to identify the optimal study group size to quantify the extent to which the change in dental morphology influences the amplitude and path of the mandibular mov...

Introduction. Peri-implantitis is a condition of the tissues adjacent to dental implants, which can occur in patients with implant-prosthetic restorations, following inadequate prophylactic measures. However, these peri-implants, untreated or improperly treated, can lead over time to quite severe complications, which can quickly turn into emergenci...

A prerequisite of a functional and esthetical implant-supported crown is a proper surgical planning and an abutment with a design and color that maintain the initial soft-tissue contour. This clinical report describes the use of a custom ceramic implant abutment designed with computer-aided design and computer-aided manufacturing (CAD/CAM) technolo...

(1) Background: Occlusal vertical dimension (OVD) in the optimal maxillo–mandibular relationship is an important parameter to establish when complex dental rehabilitation has to be done. The optimal method to measure OVD is still a challenge in everyday practice. The aim of the present study was to test the reliability of the correlation between OV...

Purpose of the study: The aim of the study is to analyze the way the disinfectants embedded in the plaster affect the setting linear dimensional stability, flexural and compressive strength of dental stone models. Material and Methods: Samples were made of type IV dental stone in which different disinfectants had been incorporated (sodium hypochlor...

The prognosis of the prosthetic rehabilitation is linked to the proper transfer of the clinical data to the dental laboratory, in the digital or conventional workflow. The aim of the present study was to compare the dimensional accuracy of analog and digitalized models, focusing on the influence of impression polymeric materials on the final digita...

In general, the treatment of dentin hyperesthesia can be performed either at home or in the dentist’s office. The therapeutic approach aims at the use of products, which decrease the excitability of pulp nociceptors or reduce the permeability of the dentin canals. The purpose of this study is to compare the efficiency in the treatment of dentin hyp...

Specifically, maintaining a prolonged sitting position is considered to be associated with an increased risk of musculoskeletal disorders in the back, neck, shoulders, arms, hands, hips, knees and legs. The purpose of this study is to generate data, which can be used to support decisions on improving the health of dental technicians, whose basic ac...

Objectives: The present study aims to identify the current level of clinical and technological performance of dental prosthetic rehabilitation on implants and the possible existence of correlations between different designs and occurring complications in Romanian practice. Material and method: An online questionnaire with 36 questions, grouped into...

Obtaining a certain bone volume is an important goal in implantology or orthopedics. In this study, we designed a new in vivo model as a useful experimental tool to assess guided bone regeneration (GBR) using a computer-aided design/manufacturing (CAD-CAM) space-maintaining barrier. The barrier was 3D-printed using three progressive heights and sur...

Introduction. Peri-implantitis is a non-specific inflammation, induced or maintained in the host tissues. Peri-implantitis usually presents a succession of specific symptoms, such as: bleeding on palpation, mobility of the dental implant, pain, increased depth of the pockets located around dental implants. Purpose. Thus, in this material we wanted...

Introduction. Atherosclerosis represents the process of stiffening of the arterial wall and includes arterial changes secondary to atherosclerosis, as well as physiological changes, reducing vascular elasticity in the elderly. However, the importance of knowing the pathology of atherosclerosis is mandatory among dentists, given the high frequency o...

Introduction. In general, implant-prosthetic restorations, whether they are fixed or mobile, and regardless of their location (maxillary or mandibular), imply slightly different design and conceiving criteria, compared to the conventional prosthetic restorations already known. Purpose. In this material we tried to present some general and particula...

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-prosthet...

Introduction. The therapeutic approach of deep carious lesions in the temporary teeth represents an extremely complex problem for pediatric dentists, both in terms of their instrumentation and in terms of collaboration with children in specialized treatment, but also with their parents. Purpose. In this material we tried to present as briefly as po...

Introduction. Reliable and rigorous, the new techniques and procedures of oral implantology have rapidly evolved, having an important place in the therapeutic plan elaboration, for the prosthetic restoration of different forms of edentation, especially single tooth edentation. Purpose. Through this study we want to implement among the dental profes...

Introduction. In the growing process of each individual, there are 4 essential stages that must be very well known by the pediatric dentist, when intervening on these changes: the stage named the age immediately after birth; pre-school age; the stage of mixed dentition and the age period after 12 years. Purpose. Starting from the existence of these...

Data on the functional three-dimensional positioning of the future restoration are important for planning a prosthetic guided insertion of the dental implants. Errors can occur in the digital and analogous process of analysis, design and production of the surgical guides, possibilities of minimizing them being vital for obtaining a predictable surg...

Background: The association between chronic periodontitis and cardiovascular disease is still controversial, despite the plethora of research on this topic. Objectives: The objective of this systematic review is to update the level of evidence on connection between periodontal and cardiovascular disease. The review question is: could a link between...

The loss of first permanent molars, maxillary and/or mandibular, can lead in time, due to the lack of prosthetic restoration, to a series of complications, some of high gravity, which can cause not only severe difficulties in subsequent prosthetic rehabilitation, but also substantial additional costs for patients. Purpose. Thus, in this material we...

This age period after 12 years is characterized by an increase in all dimensions of all the anatomical structures of the individuals, under the influence of new factors that interfere with the general tonus of the body. Purpose. Thus, in this paper, we approached certain aspects of both theoretical and practical that may occur in the formation and...

In this paper are highlighted the stresses that appear in the peri-implantation area through the forces induced by the masticatory process. The analysis consists of computer modeling of the dental implant and simulation of the load with a distributed force. It is considered a variable direction loading related to the axial insertion of the dental i...

The procedure described provides a novel and accessible virtual facebow transfer based on standardized photographs loaded in the virtual articulator module of a computer-assisted design and computer-assisted manufacturing (CAD-CAM) software program for dental applications. The practical application of the technique in a digital workflow is the corr...

The aim of the present study was to objectively assess the variability in color reproduction of metal-ceramic (MC) single crowns fabricated by blending different color of opaque and body ceramic in order to point out which shade of the ceramic layers influences mostly the final color of the restorations. Eight nickel-chromium ceramic metal alloy co...

In this paper are highlighted the stresses that appear in the peri-implantation area through the forces induced by the masticatory process. The analysis consists of computer modeling of the dental implant and simulation of the load with a distributed force. It is considered a variable direction loading related to the axial insertion of the dental i...

Diagnostic protocol-the key to functionally integrated esthetic restorations Abstract A standardized diagnostic protocol, analyzing and simulating the treatment's final results using the smile design, wax-up and mock-up work flow, creates excellent prerequisites for a perfectly integrated aesthetic and functional restoration. The present paper poin...

Materials and methods: All maxillary teeth from a set of basic study models were prepared for zirconia single crowns. The models were scanned and then, using a computer aided design software, they were mounted in a virtual articulator and specific mandibular movements were defined. The crown morphology was designed and statically adapted. Ten mode...

Aims: The purpose of this study was to methodically review the literature concerning the success and survival rates of zirconia fixed dental prostheses (FDPs). Methods: A systematic search was conducted of MEDLINE, Elsevier and the Cochrane Library to identify relevant articles about zirconia FDPs. In order to obtain suitable articles, rigorous...

Purpose of the study: The aim of the study is to assess the influence of surface conditioning of fiberglass posts through etching and sandblasting, on retention to root canal. Material and method: 30 maxillary single root teeth were endodontic treated and were sectioned at 2mm from enamel-dentine junction. After root canal instrumentation, fibergla...

Color stability through wear and time, one of the most important esthetic factor, influencing patient's acceptance of an acrylic removable prosthesis, was investigated in vivo in a limited number of studies and solely on prefabricated denture teeth.The aims of the present paper were to assess the color changes occurred with the commercially availab...

Purpose of the study: The aim of the study is to analyze the way the disinfectants embedded in the plaster affect the setting linear dimensional stability, flexural and compressive strength of dental stone models. Material and methods: Samples were made of type IV dental stone in which different disinfectants had been incorporated (sodium hypochlor...

The mathematical quantification of the relationship between the size of the inter-dental papilla and the heights of the clinical crown of the adjacent teeth. The pictures were analyzed in Photoshop CS5 Extended, resulting 512 measurements of the 5 papillae from the front maxillary area, with the following referring points: gingival zenith, tip of...

The aim of the present study was to evaluate, by superimposition of 3D digital files, the accuracy of computer-guided dental implant insertion in partially edentulous patients. Materials and Methods: Sixty-five implants (AnyRidge, MegaGen Implant, Korea) were placed, in twenty-five consecutive partial edentulous patients, with surgical template (R2...

The aim of the present study was to assess, in clinical environment, the characteristics of the newly obtained PMMA 0.4% TiO2nanocomposite with stereolitographic (3D printing) technique for a two-appointment complete denture manufacturing.

The paper analyses the stress and strain in the dental implant caused by the forces generated during the mastication process. The analysis is conducted by computer modelling the dental implant and simulating its distributed stress. Different loadings are considered, related to the axial direction of the implant, so that the complex mastication proc...

Statement of the Problem: the periodontal stability after surgical crown lengthening procedures is an important item for the final prosthetic restoration success. The appropriate time for healing is still controversial in the specific published literature. Purpose: this review aims to answer to a specific PICO question: what is the optimal time for...

Purpose: The aim of this paper was to analyze the influence of incorporation of disinfectants during the die stone linear expansion. Materials and Methods: Die stone type IV specimens with disinfection solutions (sodium hypochlorite 1%, chlorhexidine 2%) were incorporated in two concentrations (50%, 100%). The dimensional stability was tested in ac...

Our aim is to provide to the researchers with a method for applying finite element analysis in dentistry. It is well known that dentistry has evolved and more prosthetic reconstructions are made using CAD-CAM technology. Thus, is necessary to investigate how the stress and deformations in this works are acting and if there are some possibilities to...

The mathematical quantification of the relationship between the size of the inter-dental papilla and the heights of the clinical crown of the adjacent teeth. The pictures were analyzed in Photoshop CS5 Extended, resulting 512 measurements of the 5 papillae from the front maxillary area, with the following referring points: gingival zenith, tip of...

The main benefit of CAD-CAM milling in relaxation splint technology is a high level of predictability, both clinically and technically. The present work offers a method of splint design using just basic tools offered by the basic CAD program, without a specialized software.

The aim of this study is to preliminarily examine the antibacterial activity of certain dental materials, typically used in implant-prosthetic rehabilitation, against some Gram positive and Gram negative bacterial strains that are usually found in the oral cavity of patients. We focused on several types of impression material used for conjunct and...

The study aims at obtaining an aesthetic preview in complex prosthetic restorations for elderly patients. Ten elderly patients were selected for this study; an extra-and intra-oral set of photographs is performed for each patient and edited with available software. Additionally, a series of standardized photos of the head is made using a new method...

Rezumat: Obiectiv: Studiul îşi propune să verifice existenţa unei corelaţii între tipul de anomalie dentomaxilară şi un anumit tipar de uzură dentară la pacienţii tineri. Material şi metodă: 37 de studenţi ai Facultăţii de Medicină Dentară din cadrul Universităţii de Medicină şi Farmacie „Carol Davila” din Bucureşti au fost selecţionați conform uno...

Maxillary implants position may affect the esthetic, phonetic, and functional results and challenge the restorative dentist. Proper attachment selection is important considering the patient-related circumstances. This article presents a case where a change in prosthetic attachments was required because implant inclination diminished overdenture ret...

ABSTRACT Purpose: The aim of this study is to obtain a 3D computerized personalized model that allows configuring an aesthetic preview in complex prosthetic restorations for elderly patients and to build up a valuable and accurate temporary fixed restoration, as an important clinical phase. Materials and method: An extra - and intraoral set of phot...

Assessment of dento-facial appearance and esthetics is diffi cult as they are subjectively quantifi ed, a patients‘ and doctors‘ perception being often different. The face is the most expressive part of the human body and a key factor in the socio-professional integration. Losing teeth affects the overall facial appearance and frequently results in...

Objectives: The purpose of the study is to identify dental wear risk factors in the population aged 20 to 25, as well as the possibility to correlate this etiology with the localization of wear mainly at the level of specific dental areas. Method: A standardized sample group of subjects is selected, to whom a questionnaire on the main etiological f...

Objective: Analysis of opinions and attitudes of a group of private-practice dentists from the urban environment in Romania, related to the concept of shortened dental arch (S.D.A.) based on a directly addressed questionnaire and the comparison of the results with similar study results. Method: A questionnaire with a series of questions regarding t...

Human health is the most important asset an individual can own. It is an important dimension to the quality of life and can be seen from at least three different perspectives: from its negative traits, it can be defined as the absence of disease (in this case, health indicators are data on mortality, morbidity and life expectancy), it can be consid...

În odontologie, leziunile carioase cu localizare la nivelul coletului dentar reprezintă o entitate distinctă, datorită particularităţilor morfo-funcţionale ale zonei; terapia acestora pune probleme legate de viabilitatea şi durata restaurărilor. Scopul lucrării de faţă este acela de a pune în evidenţă deficienţele, ce pot să apară în timp la nivelu...

După tratamentul uzual de carie simplă, apare destul de frecvent o complicaţie neplăcută, cunoscută sub numele de hipersensibilitate dureroasă postoperatorie. Scopul lucrării este acela de a atrage atenţia asupra acestei complicaţii destul de frecventă şi de puţin cunoscută de către medicul dentist. Această afecţiune prezintă o varietate de manifes...

Abstract: After the usual treatment of simple caries, an unpleasant complication occurs quite often, namely postoperative hypersensitivity. The aim of the paper is to draw attention to this complication that is rather frequent yet little known by the dental practitioner. There are a lot of clinical manifestations of this disorder that has different...

Objective: The purpose of the study is to verify the presence of a correlation between the type of malocclusion and a specific type of tooth wear in young patients. Material and method: 37 students of the Faculty of Dental Medicine at the Bucharest “Carol Davila” University of Medicine and Pharmacy were selected according to standardized criteria....

The aim of this study is to obtain an aesthetic preview in complex dental and maxillofacial reconstructions. In order to achieve highest efficiency in prosthetic rehabilitations, we analyze the possibility of correlating the information obtained from computerized processing of facial photos with 3D intra-oral scanning of dental arches and inter-max...

The study aims at obtaining an aesthetic preview in complex prosthetic restorations for elderly patients

Objectives. In cases of severe hard tissue loss, 2 mm circumferential ferrule is diffi cult to achieve. So in these cases we should use different ferrule designs.This in vitro study investigated the effect of different ferrule designs on the fracture resistance of teeth restored with bonded post and cores. Material and method. Sixteen freshly-extra...

Purpose. The aim of this study was to investigate the relationship between the maxillary anterior teeth and some anatomical landmarks of the face: interpupillary distance, interalar width, bizygomatic width. Another purpose was to assess the validity of Chu‘s Proportion Gauge. Materials and method. 32 dental students from the University of Medicine...

Objectives: The purpose of the study is to identify the groups, respectively the dental surfaces that are most frequently under the impact of the non-carious and non-traumatic loss of hard substance, as well as its degree in patients 20 to 25 years old. Method: A sample of subjects is selected according to standardized inclusion and exclusion crite...