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

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

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

PEEK – INDIVIDUALISATION OF DESIGN,

VOLUME, DIRECTION

Always working in monobloc-conditions chairside or in-site

Mechanical stability as bone :

LE PEEK – FINITE ELEMENT STUDIES

Mechanical tolerance equivalent to cortical bone.

Capacity of resistance to masticatory constraints

like cortical bone

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

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

PEEK – CUT IMPLANTS & DYNAMIC LOADING

Experimented by National Laboratories of Essay LNA, Trappes-France

Mechanical

Loading

Machine

PEEK – CLINICAL VIEW OF IMPLANT

Functioning PEEK-abutment after 7 years

NO DEGRADATION

Excellent aspect of peri-implant tissues

Excellent

adaptability

in situ

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

PEEK – PLASMA TREATMENT FOR

ACTIVATION OF SURFACE

Chairside cold athmospheric PLASMA-treatment tp provide the

surface with free radicals for intensifying -H-N-bridges

THANK YOU

FOR YOUR ATTENTION