Class II Restorations: Systematic Matrix Selection and Proximal Contact Troubleshooting
A structured framework for troubleshooting Class II restorations, focused on matrix systems rather than materials. Dr Sornsiri Phoochitpakorn shows how band contour, wedge selection and separating rings shape the proximal contact, including modified-wedge and no-wedge PTFE techniques for sub-gingival cases.
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Class II Restorations: Systematic Matrix Selection and Proximal Contact Troubleshooting
Dr Sornsiri Phoochitpakorn returns to The Hybrid Layer to present a structured framework for troubleshooting Class II restorations. Focusing on matrix systems rather than restorative materials, he breaks down how band contour, wedge selection, and separating rings interact to determine proximal contact form and gingival adaptation. Through clear clinical rules, diagrams, and step-by-step case examples, Dr Sornsiri shows how to tailor matrix selection to interproximal distance, gingival margin position, and cavity floor anatomy. He also explores advanced strategies for challenging sub-gingival cases, including modified wedges and pure PTFE no-wedge techniques. Dr Sornsiri provides a predictable, repeatable approach to achieving reliable proximal contacts in even the most challenging Class II situations.
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Meet Dr Sornsiri Phoochitpakorn

Dr Sornsiri Phoochitpakorn
Dr Sornsiri Phoochitpakorn graduated from Chang Mai University in Thailand in 2018. Fresh out of university, he started his journey as an instructor at Suranaree University of Technology in Korat for a year. In 2019, he decided to further his training and gained experience working in the private sector. Exploring various fields of dentistry, he discovered his passion for Biomimetic…
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10/1/2025 to 9/30/2027.
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