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• Light curing infection control barriers: do some types jeopardize the concept of conventional bulk-fill composites?
  Dalia I. Sherief, Mohamed M. Kandil, Dina Ahmed El-Refai
  BMC Oral Health.2024;[Epub]     CrossRef
• Effects of Infection Control Barriers on Light Output from a Dental Light-Curing Unit Used in Various Positions
  Jitte van der Zee, Andrew Tawse-Smith, Sunyoung Ma
  Oral.2023; 3(2): 166.     CrossRef
• Evaluation of irradiance and spectral output of visible light curing units used in the laboratory
  Yoorina Choi, Su-Beom Choi, Ji-Hye Jung, Hoon-Sang Chang
  Oral Biology Research.2021; 45(4): 201.     CrossRef
• The Effectiveness of Clinical Sterilization Methods in Dental Air/water Syringes
  Seyoung Shin, Yeonmi Yang, Miah Kim, Jaegon Kim, Byeongju Baik
  THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY.2013; 40(4): 268.     CrossRef
• Power density of various light curing units through resin inlays with modified layer thickness
  Sung-Ok Hong, Yonghui Oh, Jeong-Bum Min, Jin-Woo Kim, Bin-Na Lee, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh, Hoon-Sang Chang
  Restorative Dentistry & Endodontics.2012; 37(3): 130.     CrossRef
• Effect of a multi-layer infection control barrier on the micro-hardness of a composite resin
  In-Nam Hwang, Sung-Ok Hong, Bin-Na Lee, Yun-Chan Hwang, Won-Mann Oh, Hoon-Sang Chang
  Journal of Applied Oral Science.2012; 20(5): 576.     CrossRef

The purpose of this study was to compare the sealing abilities of four endodontic temporary restorative materials using a methylene blue dye penetration test under dynamic loading. Standardized access cavities were prepared in forty-four intact human permanent molar teeth, and the cavities were restored with Caviton, MD-Temp, IRM, or ZOE. After thermocycling, an intermittent load of 98 N at 1 Hz was applied for 1,000 cycles to the long axis of the functional cusp of each of the teeth, which were immersed in a 1% methylene blue solution. The teeth were split in half, and the linear depth of dye penetration was evaluated according to the criteria. The results were analyzed using one-way ANOVA (p = 0.05) and Duncan's multiple range test. The results demonstrated that Caviton and MD-Temp showed significantly lower microleakage than IRM and ZOE. It was concluded that Caviton and MD-Temp exhibited better sealing ability than IRM and ZOE under dynamic loading.

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• Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations
  Sang-Mi Yun, Lorena Karanxha, Hee-Jin Kim, Sung-Ho Jung, Su-Jung Park, Kyung-San Min
  Restorative Dentistry & Endodontics.2012; 37(1): 29.     CrossRef

This report describes clinical cases of a palato-gingival groove on a maxillary lateral incisor with associated localized periodontal disease and pulp necrosis. The tooth of the first case was extracted because of severe bone destruction. The palato-gingival groove of the second case was eliminated using a round bur, and the resulting defect was filled with synthetic graft and covered by an absorbable membrane. Both diagnosis and treatment of palato-gingival groove were very difficult and usually extraction of the involved tooth is the treatment of choice, but combined endodontic-periodontic treatment allowed the tooth to be saved.

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• Radicular lingual groove: A contributory factor in periodontal pathology
  Gaurav Didhra, Jagjit Singh, Rajan Gupta, Parveen Dahiya
  Archives of Medicine and Health Sciences.2019; 7(2): 240.     CrossRef
• Management of a Palatal Gingival Groove in a Maxillary Lateral Incisor: A Case Report
  Ashkan Salari, Maosumeh Faramarzi, Seyedeh Fereshteh Naser alavi
  Journal of Periodontology & Implant Dentistry.2016; 7(2): 66.     CrossRef
• Endodontic treatment of maxillary lateral incisors with anatomical variations
  Moon-Hwan Lee, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung-Kyo Kim
  Restorative Dentistry & Endodontics.2013; 38(4): 253.     CrossRef

The aim of this study was to evaluate the radiopacity and cytotoxicity of three resin-based (AH 26, EZ fill and AD Seal), a zinc oxide-eugenol-based (ZOB Seal), and a calcium hydroxide-based (Sealapex) root canal sealers. Specimens, 10 mm in diameter and 1 mm in thickness, were radiographed simultaneously with an aluminum step wedge using occlusal films, according to ISO 6876/2001 standards. Radiographs were digitized, and the radiopacity of sealers was compared to the different thicknesses of the aluminum step wedge, using the Scion image software. Using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, the cytotoxicity of each material was determined in immortalized human periodontal ligament (IPDL) cells.

The results demonstrated that EZ fill was the most radiopaque sealer, while Sealapex was the least radiopaque (p < 0.05). AH 26, AD Seal and ZOB Seal presented intermediate radiopacity values. All the materials evaluated, except for Sealapex, presented the minimum radiopacity required by ISO standards. The cell viabilities of resin-based root canal sealers were statistically higher than that of other type of root canal sealers through the all experimental time. Further, EZ fill showed statistically lower cell viability in 24 and 48 hours compared to AD Seal and in 72 hours compared to all other resin-based root canal sealers. However, there was no correlation between the radiopacity and cytotoxicity of three resin-based root canals sealers (p > 0.05).

These results indicate that resin-based root canal sealer is more biocompatible and has advantage in terms of radiopacity.

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• A Comparative Evaluation of Two Commonly Used GP Solvents on Different Epoxy Resin-based Sealers: An In Vitro Study
  Sakshi Tyagi, Ekta Choudhary, Rajat Chauhan, Ashish Choudhary
  International Journal of Clinical Pediatric Dentistry.2020; 13(1): 35.     CrossRef
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  Pratima Ramakrishna Shenoi, Gautam Pyarelal Badole, Rajiv Tarachand Khode
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• A comparative evaluation of cytotoxicity of root canal sealers: anin vitrostudy
  Gautam Pyarelal Badole, Manjusha Madhukar Warhadpande, Ganesh Kothiramji Meshram, Rakesh Namdeoraoji Bahadure, Shubha Gopal Tawani, Gopal Tawani, Shital Gautam Badole
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• Evaluation of radiopacity and discriminability of various fiber reinforced composite posts
  Eun-Hye Lee, Hang-Moon Choi, Se-Hee Park, Jin-Woo Kim, Kyung-Mo Cho
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• A comparative study on radiopacity of root canal sealers
  Tae-Min Kim, Seo-Kyoung Kim, In-Nam Hwang, Yun-Chan Hwang, Byung-Cheol Kang, Suk-Ja Yoon, Jae-Seo Lee, Won-Mann Oh
  Journal of Korean Academy of Conservative Dentistry.2009; 34(1): 61.     CrossRef
• A comparative study on radiopacity of canal filling and retrograde root-end filling materials
  Yong-Sang Kim, Seo-Kyong Kim, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh
  Journal of Korean Academy of Conservative Dentistry.2008; 33(2): 107.     CrossRef