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• Micro-Computed Tomographic Evaluation of the Shaping Ability of Vortex Blue and TruNatomyTM Ni-Ti Rotary Systems
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  Crystals.2024; 14(11): 980.     CrossRef
• Evaluation of the Centering Ability and Canal Transportation of Rotary File Systems in Different Kinematics Using CBCT
  Nupur R Vasava, Shreya H Modi, Chintan Joshi, Mona C Somani, Sweety J Thumar, Aashray A Patel, Anisha D Parmar, Kruti M Jadawala
  World Journal of Dentistry.2024; 14(11): 983.     CrossRef
• Comparative evaluation of nickel titanium rotary instruments on canal transportation and centering ability in curved canals by using cone beam computed tomography: An in vitro study
  Krishnaveni Krishnaveni, Nikitha Kalla, Nagalakshmi Reddy, Sharvanan Udayar
  Journal of Dental Specialities.2023; 11(2): 105.     CrossRef
• Comparative Evaluation of Root Canal Centering Ability of Two Heat-treated Single-shaping NiTi Rotary Instruments in Simulated Curved Canals: An In Vitro Study
  Preethi Varadan, Chakravarthy Arumugam, Athira Shaji, R R Mathan
  World Journal of Dentistry.2023; 14(6): 535.     CrossRef
• A Comparison of Canal Width Changes in Simulated Curved Canals prepared with Profile and Protaper Rotary Systems
  Aisha Faisal, Huma Farid, Robia Ghafoor
  Pakistan Journal of Health Sciences.2022; : 55.     CrossRef
• Evaluation of the Respect of the Root Canal Trajectory by Rotary Niti Instruments (Protaper®Universal): Retrospective Radiographic Study
  Salma El Abbassi, Sanaa Chala, Majid Sakout, Faïza Abdallaoui
  Integrative Journal of Medical Sciences.2022;[Epub]     CrossRef

A common failure in endodontic treatment of the permanent maxillary first molars is likely to be caused by an inability to locate, clean, and obturate the second mesiobuccal (MB) canals. Because of the importance of knowledge on these additional canals, there have been numerous studies which investigated the maxillary first molar MB root canal morphology using in vivo and laboratory methods. In this article, the protocols, advantages and disadvantages of various methodologies for in-depth study of maxillary first molar MB root canal morphology were discussed. Furthermore, newly identified configuration types for the establishment of new classification system were suggested based on two image reformatting techniques of micro-computed tomography, which can be useful as a further 'Gold Standard' method for in-depth morphological study of complex root canal systems.

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• Cone beam computed tomography analysis of the root and canal morphology of the maxillary second molars in a Hail province of the Saudi population
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  Heliyon.2023; 9(9): e19477.     CrossRef
• Signs of a missed root canal
  M. Yu. Pokrovsky, O. A. Aleshina, T. P. Goryacheva, A. M. Pokrovskiy
  Endodontics Today.2023; 21(3): 205.     CrossRef
• Root Canal Morphology of Maxillary First and Second Molars in a Qatari Population: A Cone-Beam Computed Tomography Study
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  European Dental Research and Biomaterials Journal.2021; 2(01): 34.     CrossRef
• A Study Comparing the Characteristics of Zinc Oxide Eugenol-Based and Mineral Trioxide Aggregate-Based Root Canal Sealers
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  International Journal of Clinical Preventive Dentistry.2021; 17(3): 117.     CrossRef
• Root Canal Configuration of Burmese (Myanmar) Maxillary First Molar: A Micro-Computed Tomography Study
  M. M. Kyaw Moe, H. J. Jo, J. H. Ha, S. K. Kim, Antonino Lo Giudice
  International Journal of Dentistry.2021; 2021: 1.     CrossRef
• Three-Dimensional Analysis of Root Anatomy and Root Canal Curvature in Mandibular Incisors Using Micro-Computed Tomography with Novel Software
  JongKi Lee, Shin-Hoon Lee, Jong-Rak Hong, Kee-Yeon Kum, Soram Oh, Adel Saeed Al-Ghamdi, Fawzi Ali Al-Ghamdi, Ayman Omar Mandorah, Ji-Hyun Jang, Seok Woo Chang
  Applied Sciences.2020; 10(12): 4385.     CrossRef
• An investigation into dose optimisation for imaging root canal anatomy using cone beam CT
  Margarete B McGuigan, Christie Theodorakou, Henry F Duncan, Jonathan Davies, Anita Sengupta, Keith Horner
  Dentomaxillofacial Radiology.2020; 49(7): 20200072.     CrossRef
• Analysis of Root Canal Anatomy and Variation in Morphology of Maxillary First Molar Using Various Methods: An In Vitro Study
  Youssef A Algarni
  World Journal of Dentistry.2019; 10(4): 291.     CrossRef
• Root Canal Morphology of Mandibular Primary Molars: A Micro-CT Study
  Meryem ZİYA, Burcu Nihan YÜKSEL, Şaziye SARI
  Cumhuriyet Dental Journal.2019; 22(4): 382.     CrossRef
• Comparison of the implementation of extra root canal treatment before and after fee schedule change in the Taiwan National Health Insurance System
  Nien-Chieh Lee, Yen-Hsiang Chang, Hui-Tzu Tu, Chang-Fu Kuo, Kuang-Hui Yu, Lai-Chu See
  Journal of Dental Sciences.2018; 13(2): 145.     CrossRef
• Influence of environment on testing of hydraulic sealers
  Mira Kebudi Benezra, Pierre Schembri Wismayer, Josette Camilleri
  Scientific Reports.2017;[Epub]     CrossRef
• CBCT uses in clinical endodontics: the effect of CBCT on the ability to locate MB2 canals in maxillary molars
  J. Parker, A. Mol, E. M. Rivera, P. Tawil
  International Endodontic Journal.2017; 50(12): 1109.     CrossRef
• Comparison of Alternative Image Reformatting Techniques in Micro–Computed Tomography and Tooth Clearing for Detailed Canal Morphology
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  Journal of Endodontics.2014; 40(3): 417.     CrossRef
• In Vitro Biocompatibility, Inflammatory Response, and Osteogenic Potential of 4 Root Canal Sealers: Sealapex, Sankin Apatite Root Sealer, MTA Fillapex, and iRoot SP Root Canal Sealer
  Seok-Woo Chang, So-Youn Lee, Soo-Kyung Kang, Kee-Yeon Kum, Eun-Cheol Kim
  Journal of Endodontics.2014; 40(10): 1642.     CrossRef
• Análise do preparo de canais radiculares utilizando-se a diafanização
  Georje de Martin, Rogério Albuquerque Azeredo
  Revista de Odontologia da UNESP.2014; 43(2): 111.     CrossRef

Competition will usually develop between the opposing walls as the restorative resin shrinks during polymerization. Magnitude of this phenomenon may be depended upon cavity configuration and volume.

The purpose of this sturdy was to evaluate the effect of cavity configuration and volume on microleakage of composite resin restoration that has margins on the enamel site only.

The labial enamel of forty bovine teeth was ground using a model trimmer to expose a flat enamel surface. Four groups with cylindrical cavities were defined, according to volume and configuration factor (Depth × Diameter / C-factor) - Group I: 1.5 mm × 2.0 mm / 4.0, Group II: 1.5 mm × 6.0 mm / 2.0, Group III: 2.0 mm × 1.72 mm / 5.62, Group IV: 2.0 mm × 5.23 mm / 2.54.

After treating with fifth-generation one-bottle adhesive - BC Plus™ (Vericom, AnYang, Korea), cavities were bulk filled with microhybrid composite resin - Denfill™ (Vericom). Teeth were stored in distilled water for one day at room temperature and were finished and polished with Sof-Lex system. Specimens were thermocycled 500 times between 5℃ and 55℃ for 30 second at each temperature.

Teeth were isolated with two layers of nail varnish except the restoration surface and 1 mm surrounding margins. Electrical conductivity (µA) was recorded in distilled water by electrochemical method. Microleakage scores were compared and analyzed using two-way ANOVA at 95% level.

The results were as follows:

1. Small cavity volume showed lower microleakage score than large one, however, there was no statistically significant difference.

2. There was no relationship between cavity configuration and microleakage.

Factors of cavity configuration and volume did not affect on microleakage of resin restorations with enamel margins only.

Citations

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• Influence of rebonding procedures on microleakage of composite resin restorations
  Mi-Ae Lee, Duck-Kyu Seo, Ho-Hyun Son, Byeong-Hoon Cho
  Journal of Korean Academy of Conservative Dentistry.2010; 35(3): 164.     CrossRef
• Microleakage of the experimental composite resin with three component photoinitiator systems
  Ji-Hoon Kim, Dong-Hoon Shin
  Journal of Korean Academy of Conservative Dentistry.2009; 34(4): 333.     CrossRef
• A survey on the use of composite resin in Class II restoration in Korea
  Dong-Ho Shin, Se-Eun Park, In-Seok Yang, Juhea Chang, In-Bog Lee, Byeong-Hoon Cho, Ho-Hyun Son
  Journal of Korean Academy of Conservative Dentistry.2009; 34(2): 87.     CrossRef
• Difference in bond strength according to filling techniques and cavity walls in box-type occlusal composite resin restoration
  Eun-Joo Ko, Dong-Hoon Shin
  Journal of Korean Academy of Conservative Dentistry.2009; 34(4): 350.     CrossRef

The aim of this study was to evaluate the effect of cavity shape, bond quality of bonding agent and volume of resin composite on shrinkage stress developed at the cavity floor. This was done by measuring the shear bond strength with respect to iris materials (cavity shape; adhesive-coated dentin as a high C-factor and Teflon-coated metal as a low C-factor), bonding agents (bond quality; Scotchbond™ Multi-purpose and Xeno®III) and iris hole diameters (volume; 1 mm or 3 mm in diameter × 1.5 mm in thickness). Ninety-six molars were randomly divided into 8 groups (2 × 2 × 2 experimental setup). In order to simulate a Class I cavity, shear bond strength was measured on the flat occlusal dentin surface with irises. The iris hole was filled with Z250 restorative resin composite in a bulk-filling manner. The data was analyzed using three-way ANOVA and the Tukey test. Fracture mode analysis was also done. When the cavity had high C-factor, good bond quality and large volume, the bond strength decreased significantly. The volume of resin composite restricted within the well-bonded cavity walls is also be suggested to be included in the concept of C-factor, as well as the cavity shape and bond quality. Since the bond quality and volume can exaggerate the effect of cavity shape on the shrinkage stress developed at the resin-dentin bond, resin composites must be filled in a method, which minimizes the volume that can increase the C-factor.

Citations

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• Effect of instrument compliance on the polymerization shrinkage stress measurements of dental resin composites
  Deog-Gyu Seo, Sun-Hong Min, In-Bog Lee
  Journal of Korean Academy of Conservative Dentistry.2009; 34(2): 145.     CrossRef