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Vilela ABF, Soares PBF, Gonçalves FS, Beaini TL, Peres TS, Soares CJ. Fluorescence-aided identification technique using a low-cost violet flashlight and rotatory instruments for dental trauma splint removal. Dent Traumatol 2023; 39:597-604. [PMID: 37341416 DOI: 10.1111/edt.12864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/22/2023]
Abstract
BACKGROUND/AIM Removing resin composites used for bonding dental trauma splints may result in irreversible damage to the enamel. This in vitro study evaluated the influence of additional violet illumination and different bur types on damage caused to tooth enamel. MATERIALS AND METHODS Fifteen maxillary models with four bovine incisor teeth were prepared. All models were scanned using a laboratory scanning system (s600 ARTI; Zirkonzahn). Six experimental groups (n = 10) were generated by two study factors: lighting type (three levels), (1) low-cost (5-7 US$) violet LED flashlight (LUATEK, LT 408); (2) VALO Cordless light curing unit (Ultradent) with black lens; or (3) without additional illumination; and rotatory instrument (two levels), (1) diamond bur or (2) multifluted tungsten-carbide bur. New scanning was performed after splint removal, and the generated files were superimposed on the initial scans using Cumulus software. The light emitted by both violet light sources was characterized by using integrating sphere and beam profile. A qualitative and quantitative analysis of enamel damage and two-way ANOVA followed by Tukey's post hoc was used at an α = 0.05. RESULTS The use of low-cost violet flashlight that emitted the violet peak light at 385 nm and VALO Cordless with black lens at 396 nm resulted in significantly lower damage to the enamel surface than those in the groups without additional violet light (p < .001). An interaction between rotatory instruments and lighting was found. When no additional violet lighting was used, the diamond bur presented higher mean and maximum depth values. CONCLUSIONS Fluorescence lighting facilitated the removal of remnant resin composite dental trauma splints, leading to less invasive treatment. The diamond bur resulted in higher enamel damage than that affected by the multifluted bur when no violet lighting was used. A low-cost violet flashlight is a useful fluorescence-aided identification technique for removing resin composite dental trauma splints.
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Affiliation(s)
- Andomar Bruno Fernandes Vilela
- Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Uberlândia, Brazil
| | | | - Fernanda Silva Gonçalves
- Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Uberlândia, Brazil
| | - Thiago Leite Beaini
- Department of Preventive and Social Dentistry, Federal University of Uberlândia, Uberlândia, Brazil
| | - Thiago Silva Peres
- Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Uberlândia, Brazil
| | - Carlos José Soares
- Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Uberlândia, Brazil
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Harnirattisai C, Kuphasuk W, Ruengrungsom C, Naorungroj S, Sattabanasuk V. "Enamel layering" using double-layered enamel-shade resin composites: The strategy to simulate the optical characteristics of human enamel. J ESTHET RESTOR DENT 2023; 35:904-916. [PMID: 37334955 DOI: 10.1111/jerd.13072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/18/2023] [Accepted: 06/03/2023] [Indexed: 06/21/2023]
Abstract
OBJECTIVE To evaluate the optical match between enamel and resin composites fabricated using mono-layered and double-layered techniques. MATERIALS AND METHODS Enamel slabs were prepared from human upper incisors and canines. Mono-layered composite replicas were prepared from seven Filtek Z350XT and Estelite Sigma shades using silicone molds prepared from the respective enamel surfaces. Translucent and enamel shades (A2 or A3) of the two materials were produced from incisor molds for double-layered replicas, and the groups with the best results underwent accelerated aging. Spectrophotometric evaluation was performed using CIE color system. The differences in translucency (ΔTP) and color (ΔE00 ) between the enamel and paired composite replicas were calculated and analyzed using parametric statistics (α = 0.05). RESULTS For the mono-layered composites, white enamel and translucent shades of Filtek yielded the lowest ΔTP for canines (4.6) and incisors (8.9), respectively. The ΔE00 of mono-layered replicas ranged from 5.1 to 11.8. Double-layered Filtek replicas displayed a better 1-day optical match with the lowest ΔTP (3.4-4.0) and ΔE00 (4.2-4.6), irrespective of each layer's thickness. CONCLUSIONS For canines, the lowest ΔTP of Filtek white enamel was close to the acceptable threshold (4.43). For incisors, the thicker translucent double-layered Filtek composites demonstrated the greatest optical match before and after aging. CLINICAL SIGNIFICANCE Upper incisors and canines have distinct enamel optical properties. Enamel layering using specific double-layered resin composites could achieve a better optical match with upper incisor enamel.
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Affiliation(s)
- Choltacha Harnirattisai
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Watcharaporn Kuphasuk
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Chirayu Ruengrungsom
- Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Supawadee Naorungroj
- Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
| | - Vanthana Sattabanasuk
- Department of Operative Dentistry and Endodontics, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
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Apponi R, Murri dello Diago A, Colombini V, Melis G. Direct versus Indirect Techniques to Menage Uncomplicated Crown Fractures of Anterior Teeth Following Dentoalveolar Trauma. Dent J (Basel) 2021; 9:dj9020013. [PMID: 33498541 PMCID: PMC7909509 DOI: 10.3390/dj9020013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/12/2021] [Accepted: 01/19/2021] [Indexed: 11/30/2022] Open
Abstract
Dental trauma are the most common reasons for dental fractures in the anterior area, they have an incidence of 5% in the population, and in permanent teeth, they are mainly caused by sports. The most involved teeth are the maxillary anterior teeth. Direct composite restorations and indirect ceramic restorations are the therapy of choice for restoring anterior teeth after fracture when is not possible to reattach the tooth fragment. The treatment options in uncomplicated coronal fractures depend on various factors such as the amount of residual dentinal enamel tissue, the relationship with the gingival profiles, and the age of the patient. The purpose of this article is to discuss the option of using direct or indirect restorative techniques in the treatment of traumatically fractured anterior teeth and to analyze the advantages and disadvantages of the two methods.
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Affiliation(s)
- Roberto Apponi
- Department of Dentistry and Oral Maxillofacial Surgery, University of Modena and Reggio Emilia, 41124 Modena, Italy; (A.M.d.D.); (V.C.)
- Correspondence: ; Tel.: +39-339-681-7954
| | - Alberto Murri dello Diago
- Department of Dentistry and Oral Maxillofacial Surgery, University of Modena and Reggio Emilia, 41124 Modena, Italy; (A.M.d.D.); (V.C.)
| | - Vittorio Colombini
- Department of Dentistry and Oral Maxillofacial Surgery, University of Modena and Reggio Emilia, 41124 Modena, Italy; (A.M.d.D.); (V.C.)
| | - Giorgia Melis
- Department of Surgical Sciences, Dental Prosthetic Division, University of Cagliari, 09121 Cagliari, Italy;
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Yuan JX, Yang KY, Ma J, Wang ZZ, Guo QY, Liu F. Step-by-step teaching method: improving learning outcomes of undergraduate dental students in layering techniques for direct composite resin restorations. BMC MEDICAL EDUCATION 2020; 20:300. [PMID: 32917189 PMCID: PMC7488449 DOI: 10.1186/s12909-020-02230-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Layering techniques for direct composite resin restorations might be complicated for inexperienced learners, as a number of materials and instruments are required at each step. The present study aimed to compare and assess the teaching effect of step-by-step and all-in-one teaching methods in layering techniques for direct composite resin restorations among undergraduate dental students. METHODS A total of 68 junior dental students participated in this study, which was a prospective and single-blind trial. The students were randomly divided into a step-by-step group (experimental group, n = 34) and all-in-one group (control group, n = 34). The same teacher taught the two groups, ensuring a comparable teaching effect. The final score of each student was an average of scores by two experts who were blinded to the grouping. The scoring system was consisted by five parts. Each part was assigned scores of 3.0, 1.5, or 0. The total maximum score was 15 and minimum was 0. The total time taken by each group was also calculated. RESULTS The values of the quality of tooth restorations evaluated by experts for step-by-step and all-in-one groups were 11.29 ± 2.13 from 15 and 9.00 ± 2.71 from 15 (t = 3.88, P < 0.001), respectively. In addition, the time spent by the experimental group was significantly lesser than that spent by the control group, which was 122.47 ± 2.82 and 137.18 ± 6.75 min, respectively (t = 11.72, p < 0.001). CONCLUSION With regard to the layering techniques for direct composite resin restorations, the outcomes were better in the step-by-step group than in the all-in-one group.
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Affiliation(s)
- Jia-Xue Yuan
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, PR China
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an, 710004, PR China
| | - Ke-Yu Yang
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, PR China
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an, 710004, PR China
| | - Jing Ma
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, PR China
- Department of Endodontics, Affiliated Stomatology Hospital of Xi'an Jiaotong University, Xi'an, 710004, PR China
| | - Zhen-Zhen Wang
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, PR China
- Department of Prosthodontics, Affiliated Stomatology Hospital of Xi'an Jiaotong University, Xi'an, 710004, PR China
| | - Qing-Yu Guo
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, PR China
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an, 710004, PR China
| | - Fei Liu
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710004, PR China.
- Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Xi'an Jiaotong University, Xi Wu Road No.98, Xi'an, 710004, PR China.
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