what follows titanium? the peek!
TRANSCRIPT
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International Scientific Society for Promotion of Knowledge about
Isoelastic Materials in IntraOSSeous Surgery
What Follows Titanium? The PEEK!
A New Material For Support Of Weak Tissues
For Bone Reconstruction In Maxillo-Facial Squelet
For Fixation of Prosthodontics
Donsimoni, J.M., Clinique Milan, Maxillo-Facial Surgery, Paris
Meningaud, J.P., CHU Henry Mondor, Paris
Louis, M.B., Trêves
Freiburg, Konzerthalle , 5.-8. May 2011
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Biomechanical advantages
Elasticity near to bone– implant follows internal mouvements of bone
- overload of bone impossible
- no shielding-effect
LE PEEK – MOUVEMENTS AND BONE DEPLACEMENTS
The contrary:
Stimulation of remodelling
due to équivalent
mechanical stress in the 2
mediums BONE and PEEK
Equivalent density as bone
hardness as required
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PEEK – PHYSICAL PROPERTIES
UnitS Average
Densité Density Kg/m3 1 290
Dureté Hardness HRB 99
Limite élastique Yield Strength Mpa 337
Allongement Elongation at break % 20
Module de flexion Flexural modulus Gpa 21
Résistance à la flexion Flexural strength Mpa 170
Coefficient de Poisson Poisson’s ratio – 0.35
Module de cisaillement Shear modulus Mpa 1 300
Résistance au cisaillement Shear strength Mpa 53
Résistance en compression Compressive strength Mpa 118
PEEK : (-C6H4-O-C6H4-O-C6H4-C0-)n A semi-cristallin polyaromatic thermoplastic
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PEEK – INDIVIDUALISATION OF DESIGN,
VOLUME, DIRECTION
Always working in monobloc-conditions chairside or in-site
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Mechanical stability as bone :
LE PEEK – FINITE ELEMENT STUDIES
Mechanical tolerance equivalent to cortical bone.
Capacity of resistance to masticatory constraints
like cortical bone
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PEEK – FINITE ELEMENT STUDIES
Constraints obtained on the PERSO-B002
implant Ø9.
Maximum constraints: 305 MPa
Conclusion: The maximum constraint being
lower than the yield stress of the PEEK (337
MPa), one can deduce that the implant resists
the efforts which are applied to it.
Crestal implant PERSO-C001 loaded
With 20 MPa = 130 N under 30°
Deformation of corticalis 0,00464 mm
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PEEK – FINITE ELEMENT STUDIES
Crestal implant C 001
Load 80 Mpa = 520 N
Deformation corticalis 0,0026 mm
Shorted basal implants
B001
Max constraints 289 MPa
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PEEK – CUT IMPLANTS & DYNAMIC LOADING
Experimented by National Laboratories of Essay LNA, Trappes-France
Mechanical
Loading
Machine
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PEEK – CLINICAL VIEW OF IMPLANT
Functioning PEEK-abutment after 7 years
NO DEGRADATION
Excellent aspect of peri-implant tissues
Excellent
adaptability
in situ
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PEEK – SCANNER-CONTROL 4 years POST-OP
50 months post-
op:
cemented
titanium-
ceramique
supra-structure
40 d after
immediate
loading;
Bruxoman.
Patient
Excellent
gingival and
bone conditions
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PEEK – PLASMA TREATMENT FOR
ACTIVATION OF SURFACE
Chairside cold athmospheric PLASMA-treatment tp provide the
surface with free radicals for intensifying -H-N-bridges
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THANK YOU
FOR YOUR ATTENTION