classification acc. to black - masarykova univerzita...lenka.roubalikova@ti scali.cz 3...
TRANSCRIPT
![Page 1: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/1.jpg)
lenka.roubalikova@ti
scali.cz 1
Classification acc. to Black
Class I.
Pit and fissure caries
![Page 2: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/2.jpg)
lenka.roubalikova@ti
scali.cz 2
Classification acc. to Black
Class II.
Proximal surfaces in premolars and molars
![Page 3: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/3.jpg)
lenka.roubalikova@ti
scali.cz 3
Classification acc. to Black
Class III.
Proximal surfaces of incisors and canines
without lost any part if incisal edge
![Page 4: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/4.jpg)
lenka.roubalikova@ti
scali.cz 4
Classification acc. to Black
Class IV.
Proximal surfaces of incisors and canines with
lost an incisal ridge
![Page 5: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/5.jpg)
lenka.roubalikova@ti
scali.cz 5
Classification acc. to Black
Class V. cervical lesions
![Page 6: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/6.jpg)
lenka.roubalikova@ti
scali.cz 6
Preparation of cavities
Basic rules
Access to the cavity
Outlines – cavosurface margin (extention for
prevention)
Principles of retention
Principles of resistance
Excavation of carious dentin
Preparation of borders – finishing
Control
![Page 7: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/7.jpg)
lenka.roubalikova@ti
scali.cz 7
Protection of dentin wound
Dentin wound should be covered –
protection of dental pulp against irritation
Physicial
-thermal
-osmotic
Chemical
Combination
![Page 8: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/8.jpg)
lenka.roubalikova@ti
scali.cz 8
Protection of dentin wound
Isolation
Filling (small cavities)
Base (moderate – large cavities- depth 2mm and
more approx.)
Adhesive systems ( composite materials)
![Page 9: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/9.jpg)
lenka.roubalikova@ti
scali.cz 9
Filling
Filling replaces lost hard dental tissue
anatomically and functionally
Always different properties in
comparison to hard dental tissues.
![Page 10: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/10.jpg)
lenka.roubalikova@ti
scali.cz 10
Base is made usually
of zinkoxidphosphate cement
It is placed only on pulpal wall
![Page 11: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/11.jpg)
Preparation of the cavity I.st
class acc. to Black
Cavities in fissures and pits
(Occlusal surfaces of premolars and
molars and in f. coeca)
F. Coeca: buccal surfaces of lower
molars,
Palatal surfaces of lower molars, palatal
surfaces of upper incisors (mostly
lateral)
![Page 12: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/12.jpg)
Morphology
of fissures
Biofilm
![Page 13: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/13.jpg)
Caries
![Page 14: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/14.jpg)
All pit and fissure restorations
(fillings)
They are assigned in to three groups.
R. on occlusal surface of premolars and molars
R. in foramina coeca – usually on occlusal two thirds
of the facial and lingual surfaces of molars.
R.on lingual surface of maxillary incisors.
![Page 15: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/15.jpg)
Materials: Amalgam, composite.
Amalgam:
Pertinent material qualities and propeties
Strength
Longevity
Easy of use
Clinically proven sucess
![Page 16: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/16.jpg)
Access to the cavity
From the occlusal surface using the
fissure bur (or diamond burs, see
below).
![Page 17: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/17.jpg)
Cavosurface margin
Ideal outline includes all occlusal pits
and fissures. If crista transversa (1st
lower premolar)or obliqua (1st and 2nd
upper molar)are not affected, it is
strongly recommended no to prepare
them.
Cavosurface margin is located in the
middle of the distanc between the
bottom of the fissure and the cusp
![Page 18: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/18.jpg)
![Page 19: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/19.jpg)
Cavosurface margin is in ½ distance between
bottom of the fissure and the cuso
![Page 20: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/20.jpg)
Crista obliqua
M1 M2 M3
M1 M2 M3
Upper jaw
Lower jaw
Molars
![Page 21: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/21.jpg)
Premolars
Crista transversa
Lower P1
![Page 22: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/22.jpg)
Retention principles
Prepare the box – the bottom is in
dentin
Undercuts can be prepared, the
proximal ridges must not be weakened!
![Page 23: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/23.jpg)
Retention principles
Box in dentin
![Page 24: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/24.jpg)
Box (remember rounded edges)
![Page 25: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/25.jpg)
Box with undercut
![Page 26: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/26.jpg)
Resistance principles
Box – space for amalgam 1,5 – 2 mm
Keep the facial and lingual margin extensions as minimal as possible between the central groove and the cusp tips. Max 1/2
Extending the outline to include fissures, thereby placing the margins on relatively smooth sound tooth structure.
Minimally extending into the marginal ridge without removing dentinal support.
Never leave the enamel undermined
All corners are round, the bottom smooth.
![Page 27: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/27.jpg)
![Page 28: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/28.jpg)
Removal of carious,
infected, dentin
Spoon excavator or a slowly revolving ,
round carbid bur of appropriate size.
![Page 29: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/29.jpg)
The pulpal wall and pulp chamber
![Page 30: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/30.jpg)
Finishing and polishing
Fine grit diamond bur.
![Page 31: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/31.jpg)
Final control
Wash and dry the cavity
Check the praparation in good illumination
![Page 32: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/32.jpg)
Preparation is limited on the caries lesion
1,5 mm deep
Undercuts can be prepared
![Page 33: Classification acc. to Black - Masarykova univerzita...lenka.roubalikova@ti scali.cz 3 Classification acc. to Black Class III. Proximal surfaces of incisors and canines without lost](https://reader033.vdocument.in/reader033/viewer/2022042115/5e91d33040e9d77c5a1daacd/html5/thumbnails/33.jpg)
If the caries undermined the occlusa enamel,
prepare the cavity on the occlusal surface.