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Assessment: Today, no NiTi system on the market enables a dynamic upward removal of dentine debris. - PowerPoint PPT Presentation


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Assessment: Today, no NiTi system on the market enables a dynamic upward removal of dentine debris. Bibliographical reference : « An instrument innovation for initial endodontic treatment: The Revo-S  » Dr Franck DIEMER et Dr Jean-Philippe MALLET – Clinic, November 2008, vol. 29. Goals:

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Assessment:

Today, no NiTi system on the market enables a dynamic upward removal of dentine debris.

Bibliographical reference : « An instrument innovation for initial endodontic treatment: The Revo-S» Dr Franck DIEMER et Dr Jean-Philippe MALLET – Clinic, November 2008, vol. 29.


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Goals:

Design a set of instruments that enable an upward elimination of the dentine debris and an optimal root canal cleaning


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  • How?

  • The quality of the upward removal of dentine debris depends on the main cutting edges characteristics

  • - Pitch length

  • - Flutes depth

  • Orientation of the edges (helix and cutting angles)

  • + in addition, an innovation point = the asymmetrical cross section =>


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Asymmetrical cross section

clockwise

The canal axis has 3 cutting edges, located on 3 different radiuses: R1, R2 and R3.

“Snake-like” movement of the instrument inside the root canal


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  • What are the advantages of the asymmetrical cross section?

  • Enables a better root canal penetration owing to a “snake-like” movement = better guidance of the instrument up to the apical region of the root canal.

  • Facilitates the upward elimination of dentine shavings up to the coronal region owing to a bigger available volume.

  • - Avoids flutes obstruction and therefore the zipping of the dentine debris beyond the instrument tip.


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The instrument works in a cyclic way:

1. Cutting

2. Clearance

3. Cleaning


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Why talking about a « cutting, clearance and cleaning » cycle?

SC1 and SU work individually inside the root canal in a cyclic way:

Cutting, clearance, cleaning thanks to the advantages of the asymmetrical cross section.

However, each instrument has a specific action in that cycle:

SC1 = Cutting

SC2 = Clearance owing to its equilateral section (debris elimination)

SU = Cleaning


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Basic sequence with cycle?

only3 instruments!

This technique is more simple to use and adapted for most root canal anatomies.


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Basic sequence cycle?

2 root canal cleaning and shaping instruments

Finishing instrument: recapitulates and cleans


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The protocol cycle?

WL

WL

WL


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SC1 and SC2 cycle?


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Advantages of SC1 & SC2 cycle?

  • Inactive tip

  • Extended helical machining up to the coronal region increases the instrument flexibility.

  • Less stress on the instrument

  • Better debris elimination and more efficient cleaning owing to the asymmetrical cross section of the SC1.

  • No zipping



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The root canal finishing cycle?

  • SU smoothes the root canal walls.

  • Owing to its asymmetrical cross section, it recapitulates the action of the first two instruments SC1 and SC2, thus respecting the tapered shape of the canal.

  • It performs excellent upward elimination of the dentine debris and an improved cleaning.

  • An adequate canal preparation with an apical finishing of.06.


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Root canal cleaning and shaping + finishing cycle?

SC1 Active length 21mm Active length asymmetrical section 12.5 mm

SU, asymmetrical cross section, recapitulates the action of the first 2 instruments.

SC2 Equilateral section


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  • Why does not SC2 have an asymmetrical cross section? cycle?

  • The equilateral section:

  • - brings strength.

  • ensures a perfect guidance of the instrument owing to the balance of the forces

  • enables the patency of the root canal (after MMC15) until the apical constriction (or preparation apical limit).


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The MICRO-MEGA cycle?® +

  • For a successful canal preparation, apical finishing is essential: MICRO-MEGA® offers an additionnal adapted solution with specific instruments:

    AS30 AS35 AS40



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The protocol cycle?

WL

WL

WL


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The apical finishing cycle?

  • Shaping down to the working length.

  • Essential for an accurate finishing of the apical third.

  • The irrigating solution penetrates to the apical third.

  • Efficient disinfection.

  • Optimal cleaning.


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AS30 AS35 AS40 Advantages cycle?

  • Instruments dedicated to the apical zone are tapered at .06.

  • Asymmetrical cross section

  • Extended helical machining up to the coronal region

    Increased flexibility and performance of the instrument for a successful apical finishing.


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Why using .06 taper instruments at the end of the treatment ?

Tapering at .06 enables a debridement and a disinfection corresponding to biological constraints of the initial root canal treatment.

 Improved flow of the irrigating solution in the canal.

 Facilitated obturation.


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Clinical case treatment ?

Clinical case of Dr JP Mallet: UL6 shows secondary pulpitis with a carious lesion on the distal aspect observed on preoperative radiographs (eccentric and centric incidence). Root canal shaping using the Revo-S® sequence with an apical shaping adapted for each canal (mesolabial ML1 & 2 canals: AS 30 ; distolabial DL canal: AS 35 and palatal canal: AS 40).


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Classics and InGeT treatment ?® packaging

  • Pack of 6 assorted instruments SC1, SC2, SU, AS30, AS35 and AS40

  • Pack of 3 assorted instruments SC1, SC2 and SU

  • Pack of 3 assorted instruments AS30, AS35 and AS40

  • Pack of 6 SC1instruments

  • Pack of 6 SC2 instruments

  • Pack of 6 SU instruments

  • Pack of 6 AS30 instruments

  • Pack of 6 AS35 instruments

  • Pack of 6 AS40 instruments


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The Classics kits treatment ?

  • 1 pack of 6 SC1 instruments

  • 1 pack of 6 SC2 instruments

  • 1 pack of 6 SU instruments

  • 2 packs of 3 assorted AS30-AS35-AS40 instruments

  • 1 pack of 4 ENDOFLARE® instruments

  • 1 Revo-S® stainless steal tray

  • - 1 AX’S Endo contra-angle

  • Ref: 51400066


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The InGeT Kits treatment ?

  • 1 pack of SC1 6 instruments

  • 1 pack of 6 SC2 instruments

  • 1 pack of 6 SU instruments

  • 2 packs of 3 assorted AS30-AS35-AS40 instruments

  • 1 pack of 4 ENDOFLARE® instruments

  • 1 Revo-S® stainless steal tray

  • - 1 InGeT contra-angle

  • Ref: 51400067



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