Resin-Bonded Fixed Partial Denture

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Resin-Bonded Fixed Partial Denture

• ???? ??? ????
• ???
• ???

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Introduction

• Full veneer? Partial denture crown ?? ????? ???
  ??? ??? ??? ???? ??? ??? ??? ? ?? ??.

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• 1955? Buonocore? ?? ??? ????? ?? ???? ????? ???
  ??
• Ibsen? ?????? ???? ?? ??? acrylic resin ?????
  ????? ??? ?? ??

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• 1973? Portnoy - resin???? ???? ??? ??
• Rochette -????? ?? ???? ???? ???? ???
  retainer? splint?? resin?? ??
• 1980? ??? resin? ?????? ???? ????? ??? ?? ??
  ???? ???, ????? ???? ??? ??
• 1981? Livaditis, Thompson
• Maryland bridge? ???? etched cast resin
  bonded bridge? ??

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? ?

• Rochette Bridge
• Maryland Bridge
• Cast Mesh Fixed Partial Denture
• Virginia Bridge

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Rochette Bridge

• 1973? Rochette? ??
• ??? ???? ???? ??? ??? ????
• Silane coupling agent? ??? ??? ?????

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Maryland Bridge

• Livvaditis? Thompson? ?? ??????? ??? ?? ??? ???
  ????? ?? 250mA ??? 3.5 ?? ??? ??? ? 18 ?? ???
  ???? ?? ??(Nonberyllium Ni-Cr ??)

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• Thompson?? 300mA ?? 10 ??? ???? ?? cleaning ???
  ??(beryllium Ni-Cr ??)
• McLaughlin? ??? ???? ??? ?? ??? ?? ???? 99??
  ????? ? ?? ??? ????? ??? ????? ????? ????? ?? ??
  ??? ?????.
• Livaditis? non-electrolytic ??? ??

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• Doukousdakis? ??? ??? ?? gel? ??? ??? ?? ?? ???
  ??? ?????.
• Pyrolized silane?? coating? ????? etching??? ???
  ???? ?? 47-104 ? ?? ???? ???.
• ??? 250um ???? air abrading ?? silane? ?? ???
  ???? ??? ?????.

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Cast Mesh Fixed Denture

• ??? ???? ?? ??? ??? ?? ??? ???? ??? ??? ???? ??
• ?? ??? ?? ???? ?? ??? ?? ?? ? ??? retainer ??? ??
  ???? retainer? ?? ??? ??? ???? ??.

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Virginia Bridge

• Moon? Hudgins?? ???? ??? ??? ?? ?? ???? ?? ???
  ????? ?? particle-roughened ????
• Wax pencil? die??? ?? ???? ??? ???? ??? ??? model
  spray? ?? ???? ????. 140-250um ??? ?? ??? ?????
  ??? ??? ????. (lost wax technique)
• Tanaka ?? ???-?? ???? 4-META resin? ????? ?? 50um
  ?????? air abrasion ??? ??

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? ?

• 1. Reduced cost
• 2. No Anesthetic Needed
• 3. Supragingival Margins
• 4. Minimal Tooth Preparation
• 5. Rebonding Possible

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? ?

• 1. Irreversible
• 2. Technical sentivity
• 3. Uncertain Longevity
• 4. No Space Correction
• 5. No Alignment Correction
• 6. Difficult Temporization

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???

• 1. ???? ?? ???
• 2. ?? ?? ??
• 3. ?? ?? ??
• 4. ????
• 5. ?? ? ????
• 6. ?? ?? ??

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???

• 1. ???? ???
• 2. ?? ???
• 3. ??? ?? ?? ??

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Debonding ?? ??

• 1.???? ??? ???
• 2.??? ??? ??? ?? ???? ??
• 3.???? ??? ??? ??? ??
• 4.?? ??? ??
• 5.long span
• 6.??? ???

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??? ?? ??

• 1. axial reduction? ??? ??? ????? ??? ?? ?? ????
  ?? ???? ???? ????.
• 2. ??? ??? ????? ??? ????? ?? ??? ??? 180? ???
  ??.

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• 3. finish line? ??? ???? ?? 1.0mm??? ?? ??? ???
  ??.
• 4. Occlusal clearance? ??? ?? ??????? ???? ???
  ???? ????? ????.(?? ??)

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• 5. ?? ???? vertical stop? ????.

A.Countersink B.V?? cingulum rest C.Occlusal rest
seat
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• 6. ??? ?? ?? ????? ?? ??? ??? ???? ?? ??? ?????
  groove? ? ???.

A.??? ????? ??? groove B.?? ???? box form? ? ????
?? ??? ? ??.
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• 7. ??? facio-proximal line angles ??? proximal
  groove? ???.
• 8. ?? ?1???? ?? ?? ?? ??? ????.

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????
?????
???2???
????
???1???
????
?????
?????
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??? ?? ?????? ?? ???? ??
A.??? ??? ?? ????. ??? ????? ??? ?? ??? ??? ???
?? ?? ??? ??? linguoproximal corner? ??? 180??
?? ??? ??.
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• B

B.??? rest Barrack? ??? ??? ?? ??? ??? ????
mesio-occlusal ? disto-occlusal? ?? ??? ??? ???
??? rest seats? ???. ??? ???? ?? ??? ????.
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continued
Loop ???? ???? groove? ??? Occlusal inlay? ??
????.
?????? ?? ???? ???? ?? ??? retainer? ??? ?? ??
??? ? ??.
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??? ??? ??? ?? ??? ?? ?? ?? ???? ?? ?? ??
??????? ??? ???? Subocclusal? ???? ???? ?? ??
?? ????.
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Preparation Armamentarium

• 1. high-speed handpiece
• 2. articulating ribbon
• 3. small wheel and short needle diamonds
• 4. flat-end and round-end tapered diamonds

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??? ?? ??
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• ???? ???? ???? ????.
• ??? ?? ?? ??? ?? small wheel diamond? ???? 0.5mm?
  ??? ????.

??? marking
Occlusal clearance
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• Small wheel diamond? ???? incisor? ?? cingulum??
  ??? ?? ???? 0.5mm? ?? clerance? ????.
• ??? ????? 1.5-2.0mm?? ???? incisalmost ?? ???? ??
  incisal ? incisal edge? ?? ???? ???.

Lingual reduction
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• Flat-end tapered diamond? ???? ????? ????? ??? ?
  ?? ??.

Countersinks
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• ??? ??? ??? ?? ?? ??? ??? round-end tapered
  diamond? ?? facioproximal line angle? ?? ?? ????
  ???? ?? plane? ???.
• ??? plane? ?? ??? ??? plane?? ??? ????.

??? ?? Facial segment
??? ?? Lingual segment
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• ??? upright lingual axial??? cingulum ???
  biplanar proximal axial ????? ???? cingulum? ???
  ??? ??? ?? ? ??? ??? ????.

Lingual axial reduction
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• ????? ??? ??? ??? axial ??? ??? ? ?? ??? ????
  axial wall? overcontouring?? ??.
• ????? ??? ??? ????? ???? ?? ??? chamfer finish
  line? ? 1.0mm?? ?? ???? ???? ??.

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• Short needle diamond? cingulum ????? ?? ???? ????
  ??? ?? ?? groove? ????.

Cingulum groove
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• ??? ??? ??? proximal reduction? facial? lingual
  plane??? break??.

Proximal groove
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Try-in?

• ?? ???? cast??? lingually or intraorally
  displacement? ?? tooth prep.? ????? ???
  impression? ??.

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Metal framework? ????

• 1. Macromechanical (cast in mechanical) feature
• 2. Micromechanical (etched metal) feature
• 3. Chemical bonding

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1. Macromechanical (cast in mechanical) feature

• 2. Mesh pattern design
• Duralingual pattern
• Klett-o-bond (Renfert) mesh

• 1.Perforated design
• Rochette design
• Window-frame pattern
• Fishmouth design

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1. Macromechanical (cast in mechanical) feature

• 3. Particle roughened flange
• Retention bead
• Pitted surface
• Pit and bead
• Embedding common salt grain virginia salt
  technique

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• Tensile ( pulling motion) stress? ??
• - Perforation? ??? ??? resin? ????? microleakage?
  ????.
• - Resin? metal? ????? ??, resin? ???? ???? ??.

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2. Micromechanical (etched metal) feature

• 1. ?? ?? ( ??? ?? ) Electrolytic etching tech
• 2. ?? ??
• 3. Porous metal coating
• 4. Sandblasting

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1. ?? ?? ( ??? ?? ) Electrolytic etching tech

• Maryland?????? ?? ? Maryland bridge
• Electrolytic etching? ?? ?? ? ?? bonding??? 45?
  ?? ???, tensile dislodging force? ???? force? ??
  ???.
• lt ?? ?? gt
• ??? ?? ? ???? cleaning
• ???? wax? ??? ???? ??? ?? ??? ??
• 10 H2SO4 ?? 3?? 300mA/Cm2
• ???? 18?? ???? ??? ??

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2.??? ??

• ???? ????? gel? 25? ??
• Ni-chromium-Berylium sulfuric acid
• Ni-chromium, Co-Cr Nitric acid
• only nonprecious alloy?? ??
• ??? etching pattern? ?? ? ??? ?? ?? ??? ??.

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3.Porous metal coating

• Stokes and Tidmarsh ( 1986, 1987)
• - Nonprecious metal, precious alloy
• lt?? ??gt
• 1. Sanadblasting?? ????
• 2. Inzoma interzonal material??
• Inzona NP (for non precious metal alloy)
• Inzona P990 (for precious alloy)
• 3. Porcelain furnace?? ???? 970??? ?? , 1.5?? ??
• 4. 20-30?m? porous layer??

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4. sandblasing

• 50-250?m aluminum oxide powder
• Ni-Cr?? ??

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5. Chemical bonding

• A.Tin-plating
• B.Silicone oxide coating

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A.Tin-plating

• ?? ??? ???? ???? ??? ???.
• Micromechanical retention? ?? ?? ???? ???? resin
  ?? ????? ??
• Gold, gold-silver-palladium alloy? ??
• non-precious alloy?? ????
• Technique sensitive
• 50?m sandblasting ?? ? ??
• ??? ??? ?? furnace??? ??????, EZ oxisor? ?? ???
  ??.

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B.Silicone oxide coating

• SiOx- C layer???? resin? metal??? chemical
  linkage??
• ??? 100-1000nm?? carbon, hydroxyl group? silicone
  bond?? ???? ? ?? ???? ??. ? ????? ?? ? ?? ??,
  shearing? ?? ????? ??
• silane agent?? ? resin? ???.
• silane film silicoat 1?m ??? ??? ??? ??? ??
  ???.

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Cementation

• Bis-GMA? composite resin
• ??? ???? mesh? ?? hole? ??? ????? ??????
  Maryland bridge? ?? etching?? ?? ?? ???? ???? ???
  ??
• 4-META?? adhesive resin
• Superbond?
• ?? ester? composite resin
• Panavia?
• Inorganic filler(15?m??)? ??(75) ???? ???
  ??? ?? ????? ??.

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