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topic 11 logbook - Coggle Diagram
topic 11 logbook
Position and shape of dental orifices
Located at floor of pulp chamber
Anterior teeth: usually one central orifice
Maxillary molars: 3–4 orifices (MB, DB, palatal)
Mandibular molars: 2–3 orifices (mesial, distal)
Orifices follow root anatomy and symmetry
Importance of learning pulp morphology
Avoid missing canals during treatment
Prevent perforation
Understand pulp horns (risk in caries/prep)
Know apical foramen location for working length
Locate orifices for endodontic success
Structure and components of dental pulp
Soft connective tissue inside tooth
Contains blood vessels, nerves, lymphatics
Cells: odontoblasts, fibroblasts, immune cells
Divided into pulp chamber (crown) and root canal (root)
Roles of dental pulp and how achieved
Formative: odontoblasts produce dentin
Sensory: nerves detect pain, temperature
Protective: forms reparative dentin when damaged
Nutritive: blood vessels supply nutrients to dentin
Gradual changes of pulp with age
Primary teeth: large pulp chamber, wide canals, large apical foramen
Young permanent: large pulp, open apex
Adult: smaller pulp due to secondary dentin
Elderly: very small pulp space, narrow canals, possible calcification
Relationship between dental pulp and dental health
Healthy pulp = vital tooth
Damage/infection → pain, necrosis
Caries can reach pulp → pulpitis
Pulp condition affects treatment (e.g., root canal)
Anterior teeth
Single pulp chamber
Usually one root canal
Shape follows crown (triangular or oval)
Posterior teeth
Larger pulp chamber
Multiple canals
More complex anatomy
Why pulp shape follows tooth shape
Pulp forms dentin during development
Internal anatomy mirrors external tooth shape
Helps predict canal location clinically
Relationship between CEJ, pulp chamber, and root canal
CEJ: junction between enamel and cementum
Pulp chamber: above CEJ (in crown)
Root canal: below CEJ (in root)
Differences
CEJ: external landmark
Pulp chamber: central space in crown
Root canal: narrow channels in roots
General shape of pulp chamber and root canal
Deciduous teeth: large pulp chambers, prominent pulp horns, thin dentin
Permanent teeth: smaller pulp chambers
Centric relation
Jaw position where condyles are in most stable position
Independent of tooth contact
Centric occlusion
Position where teeth have maximum contact
Depends on how teeth fit together
Curvature of dental arch
Natural curves of teeth alignment
Helps in function and force distribution
Difference: Curve of Spee vs Curve of Wilson
Curve of Spee: front-to-back curve (side view)
Curve of Wilson: side-to-side curve (frontal view)