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Fichera G, Mazzitelli C, Picciariello V, Maravic T, Josic U, Mazzoni A, Breschi L. Structurally compromised teeth. Part II: A novel approach to peripheral build up procedures. J ESTHET RESTOR DENT 2024; 36:20-31. [PMID: 37565412 DOI: 10.1111/jerd.13118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVE To introduce the "Peripheral Build-Up technique - PBUt" as a foundation restoration strategy for structurally compromised teeth (SCT). CLINICAL CONSIDERATIONS Several strategies have been proposed over time (cervical marginal relocation, doughnut, and preformed ring techniques) to enable the management of restorative procedures in challenging situations such as the presence of deep subgingival defects. The PBUt is a versatile, completely additive direct technique that share some strategical concepts with these techniques to approach critical clinical situations while supplying a wider field of application thanks to distinct operative expedients. The clamp insertion modality, the extension of the proximal wall and the matrix customization/stabilization strategies adopted in PBUt endorse the possibility to manage the most apical and peripheral border of the residual tooth structure when located up to >1.5 mm above the bone crest. The periodontal response has to be then monitored over time. Moreover, thanks to the peripheral and apically-extended addictive approach, it allows a massive preservation of residual sound tooth structure and improves the resistance and retentive physical/geometrical features of the abutment tooth. The PBUt operative workflow is herein explained. CLINICAL SIGNIFICANCE The Peripheral-Build-Up technique (PBUt) advocates some innovative clinical restorative steps for the management of SCT with coronal and deep subgingival defects.
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Affiliation(s)
| | - Claudia Mazzitelli
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | - Tatjana Maravic
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Uros Josic
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Annalisa Mazzoni
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor Science (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
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Bud MG, Pop RC, Pricope R, Mesaros A, Voina A, Delean A, Lucaciu O, Cîmpean S. Comparative microleakage outcomes of different techniques used for creating the occlusal anatomy in occlusal direct restorations using the dental operating microscope. Clin Exp Dent Res 2022; 8:1623-1629. [PMID: 36229996 PMCID: PMC9760169 DOI: 10.1002/cre2.664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/31/2022] [Accepted: 08/27/2022] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVES Microleakage in direct dental restorations is a primary causal factor in the restoration's failure. The aim of this study was to evaluate whether the technique for occlusal layering of the composite resin (the use of brush adaptation, the use of magnification, cusp build-up, stamp technique) has any effect on microleakage of direct restorations in occlusal cavities. MATERIALS AND METHODS One hundred extracted human molars were restored using five restoration techniques (Packable Bulk technique, Occlusal Stamp technique, Successive Cusp Build-up technique, Successive Cusp Build-up technique + Brush adaptation, Successive Cusp Build-up technique + brush adaptation + Dental Operative Microscope magnification). The teeth were subjected to thermal aging for 800 cycles at 5°C and 55°C, infiltrated with basic fuchsin dye for 24 h, and then sectioned buccolingually in the middle of the crown. Infiltration was measured in four areas of the tooth section by five different observers and then given a score from 1 to 3, proportional to infiltration depth. RESULTS The lowest mean scores for infiltration (meaning less infiltration observed) were present in Group A (1.41 ± 0.878) and Group C (1.46 ± 0.679), while Group D showed the highest infiltration scores (1.75 ± 0.853). When comparing the groups for differences, no statistically significant difference in infiltration was found between any technique p < .586. CONCLUSION The techniques examined for placing the occlusal layer of composite in direct restorations do not differ significantly in terms of marginal infiltration, although a slight improvement was found when using the bulk technique and the successive cusp build-up.
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Affiliation(s)
- Marius G. Bud
- Department of Conservative Odontology, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Razvan C. Pop
- Department of Conservative Odontology, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Razvan Pricope
- Department of Conservative Odontology, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Anca Mesaros
- Department of Prosthodontics and Dental Materials, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Andrada Voina
- Department of Prosthodontics and Dental Materials, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Ada Delean
- Department of Conservative Odontology, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Ondine Lucaciu
- Department of Oral Rehabilitation, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
| | - Sanda Cîmpean
- Department of Conservative Odontology, Faculty of Dentistry“Iuliu Hațieganu” University of Medicine and Pharmacy Cluj‐NapocaCluj‐NapocaRomania
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Effects of aging and light-curing unit type on the volume and internal porosity of bulk-fill resin composite restoration. Saudi Dent J 2022; 34:243-248. [PMID: 35935721 PMCID: PMC9346940 DOI: 10.1016/j.sdentj.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 01/04/2022] [Accepted: 01/12/2022] [Indexed: 11/23/2022] Open
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Shaalan OO, Abou-Auf E. A 24-Month Evaluation of Self-Adhering Flowable Composite Compared to Conventional Flowable Composite in Conservative Simple Occlusal Restorations: A Randomized Clinical Trial. Contemp Clin Dent 2021; 12:368-375. [PMID: 35068835 PMCID: PMC8740796 DOI: 10.4103/ccd.ccd_600_20] [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: 07/04/2020] [Revised: 07/27/2020] [Accepted: 08/14/2020] [Indexed: 11/04/2022] Open
Abstract
Background Self-adhering flowable composite (SAFC) simplified restorative procedures, especially when compared to conventional techniques. Self-adhering composite revolutionized restorative dentistry by merging advances of adhesive and restorative materials to generate the so-called "eighth generation." Aims The objective of this clinical trial was to assess the clinical performance of SAFC compared to conventional flowable composite in minimally invasive occlusal cavities. Settings and Design A total of 18 patients with conservative occlusal cavities received randomly two types of restorations in a split-mouth design. Materials and Methods Vertise™ Flow or Filtek™ Z350XT Flowable was applied according to the manufacturer's instructions. All restorations were evaluated at baseline and after 24 months, respectively, by two blinded assessors using modified USPHS criteria. Statistical Analysis Used Chi-square test was used for intragroup comparison between time points and intergroup comparison within each time point. A value of P ≤ 0.05 was considered statistically significant. Relative risk was used to determine the clinical significance. Results The results of the current study have revealed no statistically significant difference between both materials for all tested outcomes at baseline and after 24 months. Conclusions SAFC revealed satisfactory clinical performance in restoration of minimally invasive occlusal cavities after 24-month follow-up.
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Affiliation(s)
- Omar Osama Shaalan
- Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Eman Abou-Auf
- Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Nano-CT as tool for characterization of dental resin composites. Sci Rep 2020; 10:15520. [PMID: 32968120 PMCID: PMC7511412 DOI: 10.1038/s41598-020-72599-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/03/2020] [Indexed: 12/15/2022] Open
Abstract
Technological advances have made it possible to examine dental resin composites using 3D nanometer resolution. This investigation aims to characterize existing dental nano-hybrid and micro-hybrid resin composites through comparing and contrasting nano-computed tomography (nano-CT) with micro-CT and high-resolution SEM images. Eight commercially available and widely used dental resin composites, 2 micro-hybrid and 6 nano-hybrid were researched. Cured samples were examined and characterized using nano-CT (resolution 450 nm) and compared with micro-CT images (resolution 2 µm). Acquired images were reconstructed and image analysis was carried out to determine porosity and pore morphology. A comprehensive comparison of scanning micrograph images unsurprisingly revealed that the nano-CT images displayed greater detail of the ultrastructure of cured dental resin composites. Filler particle diameters and its volumes were lower when measured using nano-CT, porosity being higher where analysed at higher resolution. There were large variations between the examined materials. Fewer voids were found in Tetric EvoCeram and IPS Empress Direct, the smallest pores being found in Universal XTE and Tetric EvoCeram. Nano-CT was successfully used to investigate the morphology of dental resin composites and showed that micro-CT gives a lower porosity and pore size but overestimates filler particle size. There were large discrepancies between the tested composites. Evidence of porosities and pores within a specimen is a critical finding and it might have a detrimental effect on a material’s clinical performance.
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Bonilla ED, Hayashi M, Pameijer CH, Le NV, Morrow BR, Garcia-Godoy F. The effect of two composite placement techniques on fracture resistance of MOD restorations with various resin composites. J Dent 2020; 101:103348. [PMID: 32417397 DOI: 10.1016/j.jdent.2020.103348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 10/24/2022] Open
Abstract
OBJECTIVE The aim of this in vitro study was to compare the effect of two restorative placement techniques, centripetal incremental technique (CIT) and bulk-fill technique (BT) on the fracture resistance of Class II MOD restorations with various resin composites in molar teeth. MATERIALS AND METHODS Fifty-six extracted, caries free third molars were prepared with MOD preparations and restored with resin composites. The specimens were divided into two groups by placement technique, centripetal incremental technique (CIT) and bulk-fill technique (BT). Each group was subdivided into four groups according to resin composite: hybrid (Aelite LS), nano-hybrid (Virtuoso Universal), bulk fill (Filtek One Bulk Fill) and the micro-hybrid (Herculite XRV) as the control. RESULTS Two-way analysis of variance test (ANOVA) followed by the multiple comparison procedure, Student-Newman-Keuls Method showed no a statistically significant difference between placement techniques and fracture resistance of Class II resin composite restorations (P > 0.05). Herculite XRV resisted a significantly higher load before fracture than the other three materials at a 0.05 level of significance, while Virtuoso Universal scored the lowest load. CONCLUSIONS There was no significant effect of the two placement techniques on the fracture resistance of Class II resin composite restorations CLINICAL SIGNIFICANCE: Resin composite restorations in Class II MODs using a simplified bulk fill placement technique showed no significant difference in fracture resistance with the centripetal technique in molar teeth.
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Affiliation(s)
- E D Bonilla
- University of California, Los Angeles, School of Dentistry, Los Angeles, CA, USA
| | - M Hayashi
- Researcher and Vice Chair of the Section of Restorative, Dentistry, University of California, Los Angeles, CA, USA.
| | - C H Pameijer
- Department of Reconstructive Sciences, University of Connecticut School of Dental Medicine, CT, USA
| | - N V Le
- University of California, Los Angeles, School of Dentistry, Los Angeles, CA, USA
| | - B R Morrow
- Department of Bioscience Research, University of Tennessee Health, Science Center, Memphis, TN, USA
| | - F Garcia-Godoy
- Department of Bioscience Research, University of Tennessee Health Science Center, Memphis, TN, USA; The Forsyth Center, Cambridge, MA, USA
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Ertürk Avunduk AT, Bağlar S. Evaluation of microleakage in class v cavities prepared by different caries removal methods. Microsc Res Tech 2019; 82:1566-1574. [PMID: 31199544 DOI: 10.1002/jemt.23322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 04/19/2019] [Accepted: 05/29/2019] [Indexed: 11/08/2022]
Abstract
The purpose of this study was to comparatively evaluate the effects of different caries removal methods on microleakage success of class V adhesive restorations by means of light microscopy (stereomicroscope) and scanning electron microscopy (SEM) observations. Sixty-four human teeth with class V caries that measured with DIAGNOdent were used. The samples were divided into four groups (n = 16) randomly according to caries removing methods of conventional method, Carisolv, Papacarie, and Er,Cr:YSGG laser system. The self-etch Clearfıl SE Bond and Clearfıl Majesty Es-II were used as restoration materials. After thermal cycles of 2,000 (5 and 55°C) samples were immersed in a 50% wt/wt AgNO3. Samples were finally imaged and scored under light microscopy and SEM, respectively. The data were statistically analyzed using Kruskal-Wallis H, pairwise comparison and Wilcoxon's T tests at 5% significance level (p < .05). Statistical analysis demonstrated that there was no significant difference between microleakage scores in dentin regions but there were significant difference between the Papacarie and Er,Cr:YSGGlaser in terms of leakage scores in enamel sites. No statistically significant difference in leakage scores emerged between light microscopy and SEM.
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Affiliation(s)
- Ayşe T Ertürk Avunduk
- Faculty of Dentistry, Department of Restorative Dentistry, Mersin University, Mersin, Turkey
| | - Serdar Bağlar
- Faculty of Dentistry, Department of Restorative Dentistry, Kırıkkale University, Kırıkkale, Turkey
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Hirata R, Pacheco RR, Caceres E, Janal MN, Romero MF, Giannini M, Coelho PG, Rueggeberg FA. Effect of Sonic Resin Composite Delivery on Void Formation Assessed by Micro-computed Tomography. Oper Dent 2018; 43:144-150. [PMID: 29394140 DOI: 10.2341/16-331-l] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES The aim of this study was to quantify the internal void volume formation in commercially available, resin composites inserted using conventional or sonic insertion methods, and analyzed using three-dimensional (3D) micro-computed tomography (μCT). METHODS AND MATERIALS Four resin composites were evaluated: one conventional (Herculite, Ultra, Kerr Corporation, Orange, CA, USA), one flowable bulk fill (SureFil SDR Flow, Dentsply International, York, PA, USA), and two packable bulk fill (SonicFill, Kerr Corporation, and Tetric EvoCeram Bulk Fill, Ivoclar Vivadent Inc, Schaan, Liechtenstein). Eight groups were evaluated according to each resin composite type and insertion method (conventional or sonic; n=5). Forty ABS 3D-printed cylindrical molds, 5.0 mm in diameter and 4.0 mm in depth, were fabricated. For the conventional resin composite, the mold was filled incrementally (two layers), while for bulk-fill resin composites, insertion was performed in a single increment. The sonic insertion method was performed using a specific handpiece (SonicFill Handpiece, Kerr Corporation). Resin composites were light cured using a multipeak light-emitting diode light-curing unit (VALO, Ultradent Products Inc, South Jordan, UT, USA) in its regular mode. Samples were evaluated by μCT, and data were imported into software (Amira, version 5.5.2, VSG, Burlington, MA, USA) for 3D reconstruction, from which the percentage of void volume was calculated. Data were analyzed using two-way analysis of variance and Tukey post hoc test at a preset alpha of 0.05. RESULTS The conventional insertion method resulted in reduced porosity, compared with sonic insertion, for SureFil SDR Flow and Tetric EvoCeram bulk fill. The sonic insertion method did not demonstrate any influence on void formation for Herculite Ultra or SonicFill. CONCLUSION Results suggest that the sonic insertion method might increase void formation during resin composite delivery, depending on restorative material brand.
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Shaalan OO, Abou-Auf E, El Zoghby AF. Clinical evaluation of self-adhering flowable composite versus conventional flowable composite in conservative Class I cavities: Randomized controlled trial. J Conserv Dent 2018; 21:485-490. [PMID: 30294107 PMCID: PMC6161520 DOI: 10.4103/jcd.jcd_210_18] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Self-adhering flowable composite (SAFC) minimized the time-consuming application procedures encountered with the traditional adhesive systems and restorative materials. Self-adhering composite combines the merits of both adhesive and restorative material technologies (8th generation) in a single product, bringing new horizons, and ambitions to restorative procedures. Aim: The aim of this study was to evaluate the clinical performance of SAFC compared to conventional flowable composite in conservative Class I cavities. Materials and Methods: In a split-mouth design, after cavity preparation, 18 patients with conservative Class I cavities received randomly two pairs of restorations, either Vertise™ flow or Filtek™ Z350 XT Flowable combined with Scotchbond™ Universal Etchant and Single Bond Universal, all materials were applied according to the manufacturer's instructions. Restorations were evaluated at baseline and after 6 months by two calibrated assessors using the modified United States Public Health Service criteria measuring (retention, postoperative hypersensitivity, color match, marginal adaptation, and marginal discoloration). Statistical Analysis: Chi-square test was used to compare between flowable composite materials after different follow-up periods, Wilcoxon signed-rank test was used to explore changes over follow-up periods. A value of P ≤ 0.05 was considered statistically significant. Results: At baseline and 6 months, there was no statistically significant difference between both materials for all tested outcomes. Conclusions: SAFC has shown clinical performance similar to conventional flowable composite after 6 months of clinical service.
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Affiliation(s)
- Omar Osama Shaalan
- Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Eman Abou-Auf
- Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
| | - Amira Farid El Zoghby
- Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Gönülol N, Ertaş E, Yılmaz A, Çankaya S. Effect of thermal aging on microleakage of current flowable composite resins. J Dent Sci 2015. [DOI: 10.1016/j.jds.2014.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Baroudi K, Mahmoud S. Improving Composite Resin Performance Through Decreasing its Viscosity by Different Methods. Open Dent J 2015; 9:235-42. [PMID: 26312094 PMCID: PMC4541310 DOI: 10.2174/1874210601509010235] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Revised: 04/25/2015] [Accepted: 04/27/2015] [Indexed: 11/22/2022] Open
Abstract
The aim of this work was to present the different current methods of decreasing viscosity of resin composite materials such as (using flowable composites, lowering the viscosity of the monomer mixture, heating composites and applying sonic vibration) and furnish dentists with a basis that can provide criteria for choosing one or another to suit their therapeutic requirements. The four discussed methods proved that lowering composite viscosity improves its handling and facilitates its application to cavities with complicated forms, decreasing time for procedure and improving marginal adaptation. Other properties improved by decreasing composite resin viscosity were controversial between the four methods and affected by other factors such as composite brand and light cure unit.
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Affiliation(s)
- Kusai Baroudi
- Department of Restorative Dental Sciences, Al-Farabi College, Riyadh, Saudi Arabia
| | - Said Mahmoud
- Department of Restorative Dental Sciences, Al-Farabi College, Riyadh, Saudi Arabia
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Kalmowicz J, Phebus JG, Owens BM, Johnson WW, King GT. Microleakage of Class I and II Composite Resin Restorations Using a Sonic-resin Placement System. Oper Dent 2015; 40:653-61. [PMID: 26237636 DOI: 10.2341/15-006-l] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES To determine microleakage of posterior Class I and II restorations using the SonicFill composite resin system. METHODS AND MATERIALS Eighty previously extracted third molars were randomly assigned to four preparation/restoration groups (n=20): Group A: Class I preparations restored with SonicFill system/bulk fill; Group B: Class II preparations restored with SonicFill system/bulk fill; Group C: Class I preparations restored with Herculite Ultra composite resin/incremental technique; and Group D: Class II preparations restored with Herculite Ultra composite resin/incremental technique. Class I preparations were approximately 3.0 mm in width buccolingually and 3.0 mm in depth. Class II preparations were approximately 3.0 mm in width buccolingually, 1.5 mm in axial depth, and 4.0 mm in gingival depth. In all groups, the enamel and dentin surfaces were conditioned with Kerr 37.5% phosphoric acid, followed by application of Optibond Solo Plus adhesive system. Following restoration, the specimens were thermocycled, immersed in methylene blue dye, and embedded in acrylic resin. Specimen blocks were sectioned in the mesiodistal direction, with marginal dye penetration (microleakage) examined using a 20× binocular microscope. Class I and II restoration microleakage was scored separately using a 0-3 ordinal ranking system. Statistical analyses were conducted using nonparametric testing at the p < 0.05 level of significance. RESULTS Significantly less microleakage was associated with both Class I restorative groups (A and C), SonicFill bulk fill and Herculite Ultra incremental fill, compared to the Class II restorative groups (B and D), SonicFill/bulk fill and Herculite Ultra/incremental fill. CONCLUSIONS According to the results of this study, the materials (SonicFill vs Herculite Ultra), C-factors, and insertion techniques (bulk vs incremental) did not appear to be significant influences with regard to marginal microleakage; however, the type of preparation cavity (Class I vs Class II) and the subsequent bonding surface (enamel vs dentin [cementum]) proved to be significant factors.
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Lawson NC, Radhakrishnan R, Givan DA, Ramp LC, Burgess JO. Two-year Randomized, Controlled Clinical Trial of a Flowable and Conventional Composite in Class I Restorations. Oper Dent 2015; 40:594-602. [PMID: 26237643 DOI: 10.2341/15-038-c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES This study evaluated the two-year clinical performance and volumetric wear of a flowable resin composite compared to a conventional highly filled composite resin in Class I restorations. METHODS AND MATERIALS In this single-center, single-blinded, comparator-controlled clinical study (Institutional Review Board approved), 120 carious teeth distributed in 60 patients were randomly assigned to four calibrated practitioners who placed occlusal restorations (n=60 flowable and n=60 conventional composite). Direct and indirect assessment at baseline, six months, one year, and two years occurred during which the modified Cvar and Ryge criteria were evaluated. Volumetric wear was determined by superimposition of profilometer scans of baseline and two-year casts. RESULTS At two years, there was no significant difference in anatomic form (p=0.80), color match (p=0.08), marginal adaptation (p=0.89), marginal discoloration (p=0.79), surface integrity (p=0.18), secondary caries (p=0.66), cold sensitivity (p=0.522), occlusal sensitivity (p=0.818), or volumetric wear (p=0.661) between materials. Both materials showed a decrease in all criteria except secondary caries (p=0.95) over time. Two-year mean volumetric wear was 3.16 ± 2.38 mm(3) for the flowable composite and 3.43 ± 2.50 mm(3) for the conventional composite. CONCLUSIONS The flowable and conventional composites used in this study have similar clinical efficacy after two years of service when placed as Class I occlusal restorations having isthmus widths less than one-half the intercuspal distance.
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