Adobe Systems
Restorative dentistry III.
4 th lecture
 Class V. making fillings

Adobe Systems
 Class V.
̶Cervical defects
-Dental caries
-Non carious lesions (erosion, abrasion,
   V shaped defects)
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Adobe Systems
Types of defects
̶Caries
̶Erosion
̶Abrasion
̶V shaped defects

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Adobe Systems
Choice of material
ØAmalgam (posterior area)
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ØComposite (mainly in anterior teeth where the defect is situated in enamel)
ØGlassionomer: caries defects, esp deeper, situated out of enamel, higher caries risk,middleterm
temporary.
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Adobe Systems
V.Class Amalgam
̶ Posterior area
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Adobe Systems
 Access
̶Removal of the undermined enamel
-Burs or diamonds (pear), tapered fissure bur
̶Separation of the gingiva– temporary filling guttapercha, fermit, clip, zinkoxidsulfate cement,
cavit, provimat).
̶Ablation of ingrown gingiva –  surgical (scalpel, laser, high frequency current)

Adobe Systems
Cavosurface margins
Gingival: axial dephth of 0,5 mm inside the
DEJ.
Extention of the preparation incisally,
Gingivally: 0,5 mm subgingivally
mesially and distally: to axial walls
Or: untill the cavosurface margins are positioned in
sound dental structure. (small cavities, good oral
hygiene)
Total dephth: 1 – 1.25 mm. If on root
surface -0,75 mm

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Adobe Systems
 Retention
̶Box 0,75 – 1,25 mm deep, undercuts,

V V

Adobe Systems
Depht
Gingivally: axial dephth of 0,5 mm inside the
DEJ.
Total dephth: 1 – 1.25 mm. If on root
surface -0,75 mm

Adobe Systems
Resistance
 No occlusal forces
V

V
 Gingival margin
 Mesial and distal margin

Occlusal margin
The bottom of the cavity follows the convexity of the crown.

Adobe Systems
Filling
Base – pulpal wall
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Amalgam – portion by portion, condensor with straight front, burnisher (spatula).

Adobe Systems
Class V. composit
Ø   Aesthetic area
̶ Margin in enamel
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Adobe Systems
Preparation for composite, making filling
Cavity is limited on caries lesion only
Enamel must be beveled
Etching, priming + bonding
Placement of composite

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Adobe Systems
Matrices
Transparent cervical matrices
Matrix band acc. to Belvedere
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Laser
Rotační nástroj

Adobe Systems
Class V. glassionomer
̶Cavities with margins in cementum
̶Or also in enamel or partly in enamel (in patients with worse level of oral hygiene)
cahlík

Adobe Systems
Glassionomer
̶  Bonds chemically
ØRealease fluoride ions
ØThermal expansion similar to dentin
ØAcceptable aesthetics
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Adobe Systems
Preparation for glassionomer
making filling
̶Cavity is limited on carious lesion only
̶Margins sholud be smoothen (no bevel)
̶Conditioner (polyacrylic acid) -20 s
̶Washing
̶Placement of glassionomer (one bulk)
̶Matrix (transparent or aluminium cervical
̶matrix)
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Adobe Systems
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Adobe Systems
Matrices for glassionomers
̶Cervical transparent matrices with the holder for lightcuring composites and glassionomers
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Adobe Systems
Matrices for glassionomers
̶Cervical foils
Hawe adaptable metal cervical matrices have a specially treated aluminium surface and are suitable
for all self-curing composites and glass ionomers.

Adobe Systems
Combination of materials
̶Glassionomer – replaces lost dentin
̶Composite – replaces lost enamel

 base of glassionomer
Composite
Connection
Glassionomer – tooth:
chemical
Composite – tooth:
micromechanical
Composite – glassionomer
Micromechanical.

5
Choice of materials
Glassionomer        Combination                 Composite
                     Or amalgam in posterior area