Lecture 1, Operative Dentistry (slides) 5s1p3v
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Conservative Dentistry 1- Dent 335 (Operative Dentistry)
Ghada Maghaireh BDS, MS American Board in Operative Dentistry Jordanian Board in Restorative Dentistry
Outline
Scope of Operative Dentistry
Caries Classification
Cavity classification
Instrumentation
Operative Dentistry
The art & science of the diagnosis, treatment and prognosis of defects of teeth that do not require full coverage restoration for correction.
Prevention, preservation, interception & restoration.
Dental Caries
Classification of Dental Caries
1)Prior condition of the tooth:
Primary (initial) Caries: The process attacks the tooth surface for the first time, regardless of progression or extent.
Secondary (Recurrent ) caries: The process attacks the tooth at the margin or margins of an existing restoration, regardless of extension or progression.
2)Situation of the tooth:
Acute Caries: Involves a large number of teeth in the mouth, and destruction of tooth structure is usually quiet rapid.
Chronic Caries: Much lower progression of the lesion, and the average lesion size is smaller than in acute caries.
Active caries: Describe lesion that progressively destroys more tooth structure.
Arrested caries: Occurs when the active degradative process is interrupted or ceases.
3)Stage of development:
Incipient caries: The lesion is confined to enamel and does not penetrate the DEJ.
Advanced caries: The lesion penetrates the DEJ.
4)Location of the Lesion:
Pit & fissure caries: originates in developmental irregularities, most often in the occlusal surface of posterior teeth.
Smooth surface caries: In smooth surfaces of crown of teeth.
Root caries: Does not originate in crown of teeth, but rather on the root structure.
Classification of Cavities
Cavity: Describes the defect in the tooth, which is the result of caries.
Cavity preparation (prepared cavity): Is the result of specific operative procedure that has removed the caries or defect and shaped the tooth to receive and retain the restorative material.
Restorative material: That is used to restore
the cavity, i.e. Amalgam.
Restoration: The cavity preparation plus the restorative material.
Black’s Classification of Cavities
Class I Class II Class III Class IV Class V Class IV
Class I
Originate in structural defects of the tooth, such as pits and fissures.
Class II
Originate in the proximal surfaces of molars and premolars.
Class III
Originate on the proximal surfaces of anterior teeth ( incisors & canines) but do not involve the loss or removal of the incisal angle.
Class IV
Involve the proximal surfaces of anterior teeth, and include the loss or removal of the incisal angle.
Class V
Found in the gingival (cervical) third of the facial and lingual surfaces of the crown of any tooth. With the exclusion of cavities resulting from Class I pit or fissure caries.
Class VI Located on incisal edge of incisors & canines And on cusp tips of canines & posterior teeth.
Classification by Complexity
Simple: Involve only one tooth surface.
Compound: Involve two tooth surfaces.
Complex: Involve three or more tooth surfaces.
Classification by Surface Prepared cavities or restoration take the name of that surface or surfaces.
One Surface: i.e. O Two Surfaces: i.e. MO, DO Three Surfaces: i.e. MOD
Components of Prepared Cavity
Wall: The inclosing side of a prepared cavity that takes the name of the adjacent surface of the tooth , i.e. M, D.
Components of Prepared Cavity
Components of Prepared Cavity
Line angle: The line, or angle formed when two walls of a prepared cavity meet. It is named by combining the names of intersecting walls, i.e. Linguopulpal line angle.
Components of Prepared Cavity
Point angle: The angle or corner formed by the junction of three walls of a prepared cavity. It take the name of the three walls that to form it, i.e. Linuoaxiogingival point angle.
Components of Prepared Cavity
Cavosurface angle: The line or angle formed by the junction of a cavity wall with the unprepared surface of the tooth
Ghada Maghaireh BDS, MS American Board in Operative Dentistry Jordanian Board in Restorative Dentistry
Outline
Scope of Operative Dentistry
Caries Classification
Cavity classification
Instrumentation
Operative Dentistry
The art & science of the diagnosis, treatment and prognosis of defects of teeth that do not require full coverage restoration for correction.
Prevention, preservation, interception & restoration.
Dental Caries
Classification of Dental Caries
1)Prior condition of the tooth:
Primary (initial) Caries: The process attacks the tooth surface for the first time, regardless of progression or extent.
Secondary (Recurrent ) caries: The process attacks the tooth at the margin or margins of an existing restoration, regardless of extension or progression.
2)Situation of the tooth:
Acute Caries: Involves a large number of teeth in the mouth, and destruction of tooth structure is usually quiet rapid.
Chronic Caries: Much lower progression of the lesion, and the average lesion size is smaller than in acute caries.
Active caries: Describe lesion that progressively destroys more tooth structure.
Arrested caries: Occurs when the active degradative process is interrupted or ceases.
3)Stage of development:
Incipient caries: The lesion is confined to enamel and does not penetrate the DEJ.
Advanced caries: The lesion penetrates the DEJ.
4)Location of the Lesion:
Pit & fissure caries: originates in developmental irregularities, most often in the occlusal surface of posterior teeth.
Smooth surface caries: In smooth surfaces of crown of teeth.
Root caries: Does not originate in crown of teeth, but rather on the root structure.
Classification of Cavities
Cavity: Describes the defect in the tooth, which is the result of caries.
Cavity preparation (prepared cavity): Is the result of specific operative procedure that has removed the caries or defect and shaped the tooth to receive and retain the restorative material.
Restorative material: That is used to restore
the cavity, i.e. Amalgam.
Restoration: The cavity preparation plus the restorative material.
Black’s Classification of Cavities
Class I Class II Class III Class IV Class V Class IV
Class I
Originate in structural defects of the tooth, such as pits and fissures.
Class II
Originate in the proximal surfaces of molars and premolars.
Class III
Originate on the proximal surfaces of anterior teeth ( incisors & canines) but do not involve the loss or removal of the incisal angle.
Class IV
Involve the proximal surfaces of anterior teeth, and include the loss or removal of the incisal angle.
Class V
Found in the gingival (cervical) third of the facial and lingual surfaces of the crown of any tooth. With the exclusion of cavities resulting from Class I pit or fissure caries.
Class VI Located on incisal edge of incisors & canines And on cusp tips of canines & posterior teeth.
Classification by Complexity
Simple: Involve only one tooth surface.
Compound: Involve two tooth surfaces.
Complex: Involve three or more tooth surfaces.
Classification by Surface Prepared cavities or restoration take the name of that surface or surfaces.
One Surface: i.e. O Two Surfaces: i.e. MO, DO Three Surfaces: i.e. MOD
Components of Prepared Cavity
Wall: The inclosing side of a prepared cavity that takes the name of the adjacent surface of the tooth , i.e. M, D.
Components of Prepared Cavity
Components of Prepared Cavity
Line angle: The line, or angle formed when two walls of a prepared cavity meet. It is named by combining the names of intersecting walls, i.e. Linguopulpal line angle.
Components of Prepared Cavity
Point angle: The angle or corner formed by the junction of three walls of a prepared cavity. It take the name of the three walls that to form it, i.e. Linuoaxiogingival point angle.
Components of Prepared Cavity
Cavosurface angle: The line or angle formed by the junction of a cavity wall with the unprepared surface of the tooth
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