Restoration Of Anterior Teeth Research Articles

Effect of Dentin Pretreatment with Chlorhexidine on Push-Out Bond Strength of Composite Restorations in Severely Damaged Primary Anterior Teeth

Objectives:Achieving durable restorations with adequate strength in severely damaged primary anterior teeth in children is a priority. The aim of this study was to investigate the effect of dentin pretreatment with chlorhexidine on push-out bond strength of composite restorations.Materials and Methods:In this in vitro experimental study, 56 extracted primary anterior teeth were randomly divided into 4 groups: (1) saline and total-etch bonding agent, (2) chlorhexidine and total-etch bonding agent, (3) saline and self-etch bonding agent, and (4) chlorhexidine and self-etch bonding agent. After the application of bonding agents, the post space was filled with Z250 composite resin. Following thermocycling of the samples, the push-out test was performed using a universal testing machine, and the results were analyzed with two-way ANOVA.Results:The mean push-out bond strength values in groups 1 to 4 were 5.7, 8.39, 5.35, and 7 MPa, respectively. Chlorhexidine groups had significant differences with saline groups in bond strength (P<0.05) but there was no statistically significant difference between the self-etch and total-etch bonding agents in the groups (P>0.05).Conclusion:Both types of bonding agents (self-etch and total-etch) exhibited favorable results in radicular dentin of primary anterior teeth; however, pre-treatment with chlorhexidine increased the push-out bond strength of composite restorations in primary anterior teeth.

Microscopic veneer restorations of anterior teeth guided by three-dimensional printing guide plate: a case report

对1例美学修复病例使用数字化美学设计指导美学蜡型制作，通过美学蜡型与研究模型的数据拟合，设计牙体预备导板并进行三维打印，配合显微牙体预备等技术进行上前牙微创修复，术后及术后1年效果良好，改善了患者的前牙美观，获得满意的修复效果。.

Restoration of Anterior Tooth with Extensive Coronal Tooth Loss with Custom Metal Cast Post: A Case Report

The success of an endodontically treated tooth, when most of the coronal structure is lost, not only dependson the quality of Endodontic treatment but also its post-treatment coronal rehabilitation. This can be achievedby retaining a core with a post holding the final fixed prosthesis. In cases where the bulk of the natural crownis lost, a post and core with Endodontics treatment help to improve fracture resistance. Therefore it is ofgreat importance that an apt post system is chosen depending on the clinical condition of the tooth to berestored. When a large amount of tooth structure is lost or if an insufficient ferrule is present, a custom castpost and core is indicated. This paper elaborates on a case report depicting restoration for central incisorusing custom cast posts followed by PFM crowns.

Effect of Straumann implant on crown appearance in immediate implant restoration of maxillary anterior teeth

To investigate the effect of Straumann implant on crown appearance in the immediate implant restoration of maxillary anterior teeth. This study was conducted among 86 patients undergoing immediate implant restoration of maxillary anterior teeth between January and December, 2018. We randomized the patients into control group for treatment with immediate implant restoration and study group receiving additional Straumann implant. The effects of restoration, bone absorption at 6 months, implant length, implant diameter, root protrusion, gingival color, far and middle gingival papilla, lip side gingival height, near and middle gingival papilla, and lip side gingival curve were compared between the two groups. The repair effect in the study group was better than that in the control group (P < 0.05). The implant length and implant diameter were significantly greater in the study group than in the control group. The root protrusion, gingival color, far and middle gingival papilla, lip side gingival height, near and middle gingival papilla, and lip side gingival curve were all better in the study group. The height of marginal bone in the study group was significantly higher than that in the control group (P < 0.05). Straumann implant can be used in immediate implant restoration of maxillary anterior teeth to achieve a better aesthetic effect.

An alternative method for immediate implant-supported restoration of anterior teeth assisted by fully guided templates: A clinical study

Statement of problemImmediate implant-supported restorations have become a common treatment strategy in the esthetic zone; however, improvements are necessary in the techniques used to fabricate interim prostheses. PurposeThis clinical study evaluated an alternative method for the immediate restoration of anterior teeth by using a fully guided template. Material and methodsTwenty-five participants were enrolled, and 30 implants were inserted by using fully guided templates. Eleven participants and 14 implant sites were treated with immediate implant placement. Fourteen participants and 16 implant sites were treated with delayed implant placement. The same method was used for immediate restoration in all the participants. A postoperative cone beam computed tomography (CBCT) scan was compared with the preoperative planning to measure the deviation between the placed and the planned implants. The independent t test was used for the comparison of immediate and delayed implant placement (α=.05). Any complications occurring in the following 3 months were also recorded. ResultsNone of the interim prostheses needed significant adjustments and were successfully installed on implants after the surgery. The overall mean deviations in 3D coronal, buccolingual coronal, mesiodistal coronal, 3D apical, buccolingual apical, mesiodistal apical, depth, and angle were 0.6 ±0.3 mm, 0.4 ±0.2 mm, 0.2 ±0.1 mm, 1.0 ±0.4 mm, 0.7 ±0.4 mm, 0.3 ±0.2 mm, 0.4 ±0.3 mm, and 1.9 ±1.1 degrees, respectively. The linear and angular deviations exhibited no significant differences (P>.05) between immediate and delayed implant placement. No complications developed in the follow-up period. ConclusionsIn the anterior esthetic zone, this alternative method appears to be suitable for immediate restoration. The accuracy of fully guided surgery was clinically acceptable for the prefabricated interim prostheses and helped reduce postoperative chairside time.

Twelve-month evaluation of the atraumatic restorative treatment approach for class III restorations: An interventional study.

BACKGROUNDAtraumatic restorative treatment (ART) may be appropriate for populations without accessibility and affordability. More data are required regarding the success rate of ART in anterior teeth.AIMTo evaluate the clinical performance of restoring class III cavities in anterior teeth of permanent dentition using the ART approach.METHODSA longitudinal interventional field study was carried out at two rural primary health centers, Tumkur district, India. A total of 54 teeth in 39 patients were evaluated for the survival rate of class III restorations in permanent anterior teeth using the ART approach in children and adult populations. Evaluation of ART restoration was carried out using Frencken J criteria, the mean procedure time, patient acceptance and reported pain severity during the ART approach were evaluated using a visual analog scale. Calculation of the cost of ART was also performed.RESULTSThe mean time taken to perform the ART procedure was 14.79 ± 5.8 min with the majority of patients reporting only mild pain. At 6 mo follow-up, 72.2% remained in a good state, but this reduced to 27% at 12 mo. The cumulative survival rate of the restorations was 94.4% at 6 mo and 80.9% at 12 mo follow-up. Estimation of the direct cost for a single class III restoration was 186.50 INR (2.64 USD).CONCLUSIONART may be a good comprehensive option for basic oral health care for underserved or inaccessible populations, and preventive care for patients.

Enhancing smile with ceramic veneers two case reports

Aesthetic rehabilitation depends clinical procedures as well as respect for biomemitic principles to obtain the final result. In this case report, two cases are described for the restoration of anterior teeth with porcelain veneers. The porcelain veneers have become a treatment of choice due to the advancements in its bonding procedures as well as its high esthetics. The clinical success of any technique depends on the correct identification of a case for which this treatment is appropriate and the successful execution of the clinical steps involved.

Direct Composite Resin Restoration of Anterior Maxillary Teeth and Esthetic Smile Design: A Case Report and Esthetic Smile Design: A Case Report

Dental esthetic complex involves more than one caries with malformed shape and malposition. Dental trauma most commonly affects maxillary anterior teeth, and subsequently affects the esthetics, functions, and psychological well-being of the individual. Composite resins have become an integral part of contemporary restorative and minimally invasive dentistry. Objective: To summarize the successful use of direct composite resin restoration in the management of a 29-year old male patient. Case Report: A 29-year old male patient presenting with multiple secondary caries and crown fractures in the anterior maxillary teeth, resulting in an unaesthetic smile. Comprehensive esthetic dental treatment was carried out. The patient was highly satisfied with the results even after eleven months of follow-up. Conclusion: restorative success with composite resins, the dental treatment plan should be carefully executed with attention to factors such as dental convexities and contours, re‑establishment of function, and esthetics. Smile design should always be a multifactorial decision-making process that allows the clinician to treat patients with an individualized and interdisciplinary approach.

Fracture Resistance of Three Post Types in the Restoration of Anterior Primary Teeth

Background: Extensive restorative treatments of anterior primary teeth are challenging in pediatric dentistry. Objective: This study aimed to compare the fracture resistance of three post types for restoring the anterior primary teeth. Methods: This in-vitro study was carried out on 90 extracted maxillary anterior primary teeth with intact roots. They were randomly allocated into six groups to be restored with conventional composite resin post, X-tra fill composite resin post, Tetric N Ceram composite resin post, prefabricated glass fiber post with conventional composite build-up, prefabricated glass fiber post with X-tra fill composite build-up, and prefabricated glass fiber post with Tetric N Ceram composite build up. The samples were polished and placed in acrylic resin blocks with 1 mm of part of cervical root being out, thermocycled (×5000) and tested for fracture resistance. Intra-class correlation test, Kruskal-Wallis test and one-way ANOVA were used for statistical analyses (α=0.05). Results: The mean fracture resistance was significantly different among the six groups. It was the highest in prefabricated glass fiber post with conventional composite build-up (418.64 N), prefabricated glass fiber post with X-tra fill composite build-up (403.63 N) and prefabricated glass fiber post with Tetric N Ceram composite build up (361.63 N); and the lowest in Tetric N Ceram group (280.65 N). The groups were significantly different concerning the fracture strength and fracture state. Conclusion: Since the anterior teeth restored with prefabricated glass fiber posts were far more fracture resistant, and prefabricated glass fiber posts can be promisingly used for the restoration of anterior primary teeth.

Chairside computer-aided design/computer-aided manufacturing (CAD/ CAM)-based restoration of anterior teeth with customized shade and surface characterization: a report of 2 cases

Chairside computer-aided design/computer-aided manufacturing (CAD/ CAM)-based restoration of anterior teeth with customized shade and surface characterization: a report of 2 cases

Conservative Approach for Management of Complicated Crown Facture using Tooth Fragment Reattachment Technique

The restoration of a fractured anterior tooth by fragment reattachment is biological, conservative, and the most currently acceptable treatment option. In addition, the advancements in adhesive dentistry, tooth fragment reattachment procedure has become simpler and clinically reliable. This article presents management of two cases of complicated crown fracture of maxillary incisors by reattachment of the fractured tooth segment.

Colagem de fragmento dentário como técnica na reabilitação bucal: revisão de literatura

Introdução: A frequencia com que os dentes se fraturam, bem como as dificuldades para restaurá-los adequadamente têm estimulado o desenvolvimento de técnicas e materiais restauradores que proporcionem estética e função o mais próximo da dentição natural. Uma das técnicas que mais proporcionam estética e função de forma harmoniosa aos dentes anteriores fraturados é a colagem de fragmento. Objetivo: O objetivo desse artigo foi rever a literatura disponível, apresentar as indicações, vantagens, limitações, classificação, critérios de diagnóstico e de seleção de material e de técnica a serem utilizadados para a realização da técnica de colagem de fragmento. Resultados: O presente trabalho trata-se de uma pesquisa de revisão bibliográfica aonde foi realizada através da biblioteca on-line, nas bases de dados PubMed e BVS de artigos além de capítulos de livros, em português ou inglês no período temporal de 1955 a 2019. Foram selecionados 30 artigos com texto completo em suporte eletrônico e que se enquadravam nos critérios de inclusão/exclusão e 5 livros. Conclusão: O emprego da técnica de colagem de fragmento é uma excelente, importante e duradoura alternativa para a restauração de dentes anteriores fraturados, tanto do ponto de vista estético e funcional, como também do ponto de vista psicológico.

Dental prophylaxis influence in tooth color assessment-Clinical study.

To evaluate dental prophylaxis influence in tooth color assessment with the use of different methods. Volunteers were consecutively recruited and screened according to appropriate inclusion/exclusion criteria. Each participant's upper right central incisive and canine color was measured before and after dental prophylaxis with a one-week interval. Tooth color assessment was performed by calibrated operators and the patient using a VITA Classical shade guide and by spectrophotometric methods with a proper device (SpectroShade). Color was reported as mean with SD of Commission Internationale De l'Eclairage (CIE) L*a*b* values, ΔEab and ΔE00 . One-way analysis of variance and Tukey post hoc were performed to assess differences between methods and paired t test for assessing differences in tooth color coordinates after dental prophylaxis. Values of P < .05 were taken as significant. Fifty patients were included. Self-assessed dental prophylaxis effects equated to a significantly different mean ΔE00 value of 2.3 ± 1.7 (P < .01), when compared to the calibrated operator reported 0.8 ± 1.1 and the spectrophotometer 1.0 ± 0.5. Half of volunteer's ΔE00 values surpassed the acceptability threshold, when compared to 28% from investigator and 10% from spectrophotometer. Performing a dental prophylaxis did have an influence in tooth color perception with a higher self-perceived effect in the patient assessment. The results of this study suggest that performing professional dental prophylaxis presented a perceived effect in tooth color regardless of the method used being that patients precepted whiter and less yellowish teeth. Since extrinsic stain is considered as one of the factors that could influence tooth color assessment, performing professional dental prophylaxis prior to composite or ceramic color selection in anterior teeth restorations could consequently increase treatment predictability.

Esthetic restoration of anterior teeth using temporization material in deciduous dentition: A case report

Dental caries is a major health problem in pre school, primary school going children and adolesecents. However, every individual is susceptible to this ailment during the course of its life. A number of treatment modalities are available for restoring primary incisors which include pre-veneered stainless steel crowns, polycarbonate crowns, resin strip crowns and zirconia crowns. This case report demonstrates a clinical technique for restoring primary incisors using a new temporization material. Keywords: Dental caries, Crowns, Temporization material, Primary incisors.

Biomechanical Behavior of Zirconia Post and Core In vitro: a Systematic Review

Restoration of endodontically treated teeth is a common clinical practice which is being improved constantly. One piece zirconia post and cores are being introduced to dental treatments routine and offers aesthetic approach in restoring severely damaged teeth. However the biomechanical properties of such restorations remain unclear. The purpose of this systematic review was to describe biomechanical properties of zirconia post and cores and put them in a perspective with more conventional restorations. An electronic search was conducted in PubMed, Cochrane Library and Clinical Key databases for in vitro studies dating up to October 2019. Clinical studies and case reports were excluded.&#x0D; Results: a total of 8 articles were included in a systematic review, consisting of 4 in vitro studies and 4 finite element analysis (FEA). Several evaluation parameters were set: zirconia post and core fractural resistance comparison with metal and prefabricated post systems, stress distribution in teeth restored with zirconia post and cores.&#x0D; Conclusions: zirconia post and core could be a promising restoration for anterior teeth where aesthetic demand is high. It showed similar in vitro biomechanical behavior and fractural resistance to gold alloy restorations, although such findings only show a tendency and further clinical investigation is needed.&#x0D; Keywords: zirconia post and core, prosthetic dentistry, biomechanical behavior.

Colour stability and surface properties of high-translucency restorative materials for digital dentistry after simulated oral rinsing.

High-translucency restorative materials are commonly used in the restoration of anterior teeth where aesthetics is a critical factor. In this in vitro study, the impact of mouthwash on the colour stability and surface characteristics of high-translucency computer-aided design and computer-aided manufacturing (CAD-CAM) dental restorative materials was evaluated. Two-hundred specimens were fabricated from five high-translucency CAD-CAM materials: a resin nano ceramic; a polymer-infiltrated ceramic network; a feldspathic ceramic; a lithium disilicate glass ceramic; and high-translucency zirconia. Each group of ceramic specimens was then divided into four subgroups: conventional mouthwash (LISTERINE); whitening mouthwash (LISTERINE Healthy White); chlorhexidine gluconate; and distilled water. Oral rinsing was simulated at 100rpm for 180h, representing 15yr of clinical simulation. The specimens were then evaluated for colour, translucency, gloss, roughness, and surface morphology. Two-way ANOVA and linear mixed models were used for intergroup comparisons (α=0.05). The polymer-infiltrated ceramic network and feldspathic ceramic became brighter, more opaque, less glossy, and rougher after rinsing with the whitening mouthwash. The long-term use of specific mouthwashes can cause deterioration of the optical and surface properties of high-translucency CAD-CAM dental restorations.

Effect of CAD/CAM zirconia post core versus fiberglass post and resin core in treatment of patients with restoration of maxillary anterior teeth

Objective To compare the effect of CAD/CAM zirconia post core and fiberglass post and resin core in treatment of patients with restoration of maxillary anterior teeth. Methods A total of 104 patients with restoration of maxillary anterior teeth were divided into two groups, with 52 cases in each group. Control group was treated with CAD/CAM zirconia post and core, while study group was treated with fiberglass post and resin core. The success rate of restoration, the excellent rate of masticatory function, the intensity of fracture resistance and the index of gingival bleeding were compared between the two groups. Results The success rate of restoration in the study group was 90.38%, which was significantly higher than 75.00% in the control group(P<0.05). The excellent rate of masticatory function within one year after operation in the study group was 96.15%, which was significantly higher than 82.69% in the control group(P<0.05). After treatment, the intensity of fracture resistance was significantly higher than that before treatment in both groups, and the study group was significantly higher than the control group(P<0.05). After treatment, the index of gingival bleeding was significantly lower than that before treatment in both groups, and the study group was significantly lower than the control group(P<0.05). Conclusion Compared with the CAD/CAM zirconia post core, the fiberglass post and resin core has a higher success rate of restoration, a higher excellent rate of masticatory function, and better intensity of fracture resistance and index of gingival bleeding.

Comparative evaluation of the compressive strength of two different post systems in primary anterior teeth restored with pediatric zirconia crowns.

In cases where there is an extensive loss of crown structure, these treatments require intracanal posts placement for retention as occlusal forces make the tooth structure weak and prone to fracture. Thus, restoration of primary anterior teeth, followed by post placement and cementation with pediatric zirconia crowns helps withstand masticatory forces to a greater extent. This in vitro study evaluates the compressive strength of two different post systems in the primary anterior teeth, restored with pediatric zirconia crowns. The present study was an in vitro, experimental, comparative study, with a study sample selected using a convenience sampling method. Forty-five primary anterior teeth were obturated and restored with enhanced omega-shaped loop and reinforced glass-fiber posts were cemented with pediatric zirconia crowns. The compressive strength and the type of fracture were evaluated for each group. This study demonstrated that the glass-fiber posts had a higher compressive strength, although omega-shaped posts showed a higher presence of favorable fracture. Retentive omega-shaped loops and reinforced glass-fiber posts were both capable of withstanding high fracture loads. The addition of cemented pediatric zirconia crown on decayed primary anterior teeth restored with post systems helped withstand the load to a greater extent.

Aesthetic restoration of anterior teeth with monolithic self-glazed zirconia crowns via a completely digital workflow: a clinical case report

ABSTRACT This case represents aesthetic restoration by full-contour monolithic zirconia crowns without porcelain veneer via a completely digital workflow. Virtual prostheses were designed following intraoral scanning and digital smile design (DSD) process. Polymethyl methacrylate (PMMA)-based provisional restorations were used and adjusted as guide for aesthetic and occlusal evaluation. Definite self-glazed zirconia crowns were delivered by superimposing the abutment teeth and modified temporary crowns in situ. Such novel zirconia crowns were formed by net-shape manufacturing process following biogeneric copying of the provisional crowns. The restorations represented functionally tailored hierarchical structures exhibiting superior smoothness on the surface without conventional manual work of grinding, polishing and veneering. The application of full-contour monolithic zirconia restorations in the anterior region via a completely digital workflow indicates a reliable treatment option.

Application value of non-flapping technique in immediate implant prosthesis in aesthetic area of anterior teeth

Objective To explore the application value of non-flapping technique in immediate implant prosthesis in aesthetic area of anterior teeth. Methods From March 2016 to September 2017, 104 patients who received immediate implant restoration of anterior teeth in the First Hospital of Jiaxing were divided into observation group (53 cases) and control group (51 cases) according to random number table method.The control group was treated with conventional flap immediate implantation, while the observation group was treated with non-flap immediate implantation.The red aesthetic index (EPS), alveolar bone resorption and patients' satisfaction were compared between the two groups. Results The PES scores of the observation group were (6.17±1.21)points, (5.94±1.03)points and (5.12±0.85)points, respectively after repair 3 months, 6 months and 12 months, which were significantly higher than those of the control group [(5.38±0.96)points, (4.79±0.76)points, (4.05±0.70)points] (t=3.679, 6.459, 6.993, all P<0.05). At 3 months, 6 months and 12 months after restoration, the alveolar bone resorption in the observation group was(0.29±0.04)mm, (0.63±0.12)mm, (1.07±0.17)mm, respectively, which was significantly lower than that in the control group [(0.36±0.07)mm, (0.95±0.24)mm, (1.28±0.26)mm] (t=6.291, 8.649, 4.893, all P<0.05). At 12 months after repair, the satisfaction rate of patients in the observation group was 98.11% (52/53), which was significantly higher than 84.31% (43/51) in the control group (χ2=4.637, P<0.05). Conclusion The application of non-flapping technique in immediate implant prostheses in aesthetic area of anterior teeth has good effect, which can obtain better aesthetic effect, reduce alveolar bone absorption and improve patients'satisfaction with prostheses.However, in clinical work, it is necessary to strengthen preoperative examination and measurement of patients, accurately grasp the direction of implants and avoid the occurrence of bone wall perforation during operation. Key words: Mouth diseases; Tooth; Tooth preparation, prosthodontic; Dental implantation; Oral hygiene index; Alveolar bone loss; Esthetics, dental; Patient satisfaction