Contact point restoration Class-II 23 24 #Polydentiya Case 021 #Nictone #Apokin #8KDCV 8K

CLINICAL CASE #021: ENGINEERING RESTORATION

Contact Point Restoration (Class II) | Teeth 2.3, 2.4

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1. CLINICAL SITUATION

• Location: Upper left arch, Canine (2.3) and First Premolar (2.4).
• Defect Type: Class II (Black) on proximal surfaces.
• Task: Anatomical reconstruction of the contact point and marginal seal.
• Registry Note: This case demonstrates the performance of the Quickmat™ system in the frontal-lateral transition zone (2.3–2.4), where contact geometry requires precise control of matrix curvature.

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2. RSBC PROTOCOL (Step-by-Step)

• R (Rubberdam): Isolation of the operative field using the NicTone™ system. Stability is ensured with Tor VM™ clamps. The use of a medium-grade sheet guarantees the absence of sulcular fluid and respiratory moisture in the bonding zone.
• S (Sandblasting): Kinetic substrate preparation ($Al_2O_3$, 27 $\mu m$, 2.0 bar). Micro-abrasive treatment is aimed at removing the “smear layer,” desquamating defective tissues, and activating enamel prisms to enhance micromechanical retention.
• B (Bonding): Adhesive stage using Kerr Optibond FL™:
  • Total-Etch: Etching with 37% Phosphoric Acid (enamel/dentin).
  • Infiltration: Active scrubbing of primer and filled adhesive (4th generation).
  • IDS (Immediate Dentin Sealing): Immediate sealing of the dentin creates a reliable biological barrier and increases bond strength.
• C (Composite): Biomechanical reconstruction. Restoration of the proximal wall using the matrix system, followed by incremental layering of the occlusal morphology.

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3. ACCESSORIES SPECIFICATION (POLYDENTIA KIT)

A specialized tandem of Polydentia tools was utilized to achieve precise contact density:

Instrument	Reference (REF)	Functional Role
Quickmat™ Sectional Matrices	REF 5705	Anatomical contouring of the proximal walls
myRing Forte™ Separation Ring	REF 6816	Separation force to ensure tight contact points
myWedge™ Interdental Wedges	REF 7102	Plastic adaptation and cervical margin sealing

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4. ENGINEERING BUILD-UP

• Mechanics: Utilization of the myRing Forte™ separation ring for controlled opening of the interproximal space.
• Adaptation: Positioning of myWedge™ to prevent the formation of overhangs in the critical cervical zone.

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5. TECHNICAL VERIFICATION

• Video Protocol: #8KDCV – 8K Dental Clinical Video.
• Format: 8K HDR.
• Operator: Alexander Apokin
• Location / Date: Moscow, 2023.

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TAXONOMY: