Overview of Polydentia Unica Proximal Anterior Matrix System by Dr. Osama Shalaan скачать в хорошем качестве

Overview of Polydentia Unica Proximal Anterior Matrix System by Dr. Osama Shalaan

https://www.physicsforceps.com/anteri... 1.586.585.1210 Overview of Polydentia Unica Proximal Anterior Matrix System by Dr. Osama Shalaan. Unica Proximal stainless steel matrices have a thickness of 0.03 mm and are available in two shapes (standard and deep), designed to fit the contour of the anterior teeth labially, palatally and proximally. Unica Proximal matrices are especially indicated for anterior restorations involving the proximal walls (Class III and IV, peg-shaped lateral incisors, diastema closures, partial and total veneering). The easy-to-place cervical labiopalatal arch has the purpose of securing the matrix between the papilla and the tooth subgingivally, in order to improve matrix stability after placement. A wedge can be used to secure the matrix but it is not mandatory. With a shape conceived to ensure an optimal fit on the anterior teeth, it affords better visibility and operatory field access than other solutions such as posterior sectional matrices. faithful reproduction of the labial, palatal and proximal contours universal shape and contour for upper and lower mesial and distal teeth that considerably simplify and expedite anterior restorations allows unobstructed visibility and operatory field access, even when multiple matrices are placed at the same time self-stabilising properties: after placement, the matrix is stable and secured for the entire procedure, while allowing for the use of a wedge, where necessary longer cervical extensions than posterior sectional matrices, for easy restoration of the cervical part of the proximal contour two sizes (standard and deep) to ensure an optimum fit on different incisor morphologies deep version for perio application with a flat papilla This video, "Overview of Polydentia Unica Proximal Anterior Matrix System," by Dr. Osama Shalaan, presents a simplified, predictable approach to anterior composite restorations using the Polydentia Unica matrix system and a streamlined finishing protocol. The core philosophy is that a perfect first step—controlling the restoration's outer shape with a matrix—significantly reduces the time and effort required for the final finishing and polishing. Polydentia Unica Matrix System Dr. Shalaan emphasizes that choosing the right matrix is key to predicting the final mesial contour and achieving symmetry [06:32]. Normal Unica: A U-shaped, 30-micron stainless steel matrix. Regular is for large teeth (e.g., central incisors and canines). Mini is for small teeth (e.g., lateral incisors and lower anterior teeth) [06:40]. Unica Proximal (Sectional Matrix): This matrix is preferred because it perfectly follows and adapts to the labial contour of anterior teeth. It is also self-stabilizing, often eliminating the need for wedges by adapting to the papilla and sulcus [07:11]. Simplified Layering and Frame Technique Using the Unica matrix, the proximal walls are built first to create an "Unica frame." This controls the amount of veneering material, prevents over-contoured restorations, and decreases finishing time [08:18]. Layering: To minimize the chance of voids and contamination, Dr. Shalaan recommends layering both dentin and enamel in one bulk layer for anterior restorations, using a side-to-side movement rather than an up-and-down motion [09:46] - [10:05], [12:08]. Characterization: For incisal characterization (mamelons/opalescence), the proximal walls at the incisal third should be thin to allow room for layering clear or transparent enamel [10:38]. Replica Anterior Instrument: A new instrument that further simplifies the process by adapting and shaping the composite, creating transitional lines, and removing excess in a single step, reducing the need for burs [16:55] - [17:21]. Four-Step Finishing and Polishing Protocol Dr. Shalaan uses only four steps for simplified finishing and polishing: Contour and Shape: Use a single abrasive disc (45° from cervical to incisal) to contour the final shape, creating the three facial planes and following the arch's curvature [01:24]. Controlling the transitional lines helps achieve symmetry and can create an optical illusion of wider or narrower teeth [02:34]. Surface Textures (Secondary Anatomy): Use a specific bur to create the development grooves, starting wider at the incisal edge and narrowing cervically, being careful not to create sharp grooves [03:02] - [03:28]. Pre-Polishing: Use a twist rubber moving in a forward direction (45° from cervical to incisal) with intermittent touches to adapt to surface details and prevent overheating [03:35] - [04:01]. Final Polishing: Use a super active submicron diamond paste (like Lucida) with a star-shaped felt tip (from Dash Shine) to eliminate microcracks, increase surface gloss, and enhance the longevity of the restoration [04:11] - [04:47]. #polydentia #unica #anteriormatrix #matrix #drosamashalaan