Horse shoe shaped band of thickened epithelium in the mandibular and maxillary arches?
Primary epithelial band
3 stages of odontogenesis?
- Bud stage
- Cap stage
- Bell stage
Enamel organ is composed of? (4)
- Outer and inner enamel epithelium
- Stellate reticulum
- Stratum intermedium
Star shaped network of cells found at the center of the enamel organ?
Found between the stellate reticulum and inner dental epithelium?
Serves as the enamel pulp?
Tooth germ comprises of? (3)
- Enamel organ
- Dental papilla
- Dental follicle/sac
Transitory structures (3)
- Enamel knot/Aherns knot
- Enamel cord
- Enamel navel
Condensation of cells found at the midportion of the enamel organ?
Vertical extension of the enamel knot towards the outer enamel epithelium?
Indentation found at the outer enamel epithelium?
It forms the site of the future cusp tips or incisal edge?
Part of the enamel organ containing the mucoid fluid?
3 physiologic processes of odontogenesis?
It determines the shape of the crown?
Membrana preformativa is also called?
It marks the line which will become the DEJ of the finished tooth?
It initiates the peripheral cells of the dental papilla to become odontoblasts.
What causes the preameloblasts to become ameloblasts?
Secretion of dentinal matrix by the odontoblasts
True or false. Predentin is completely organic when formed?
This process is responsible for the production of enamel in the form of rods?
Which is formed first: enamel or dentin?
Final product of ameloblasts which is a protective covering of the enamel?
Primary enamel cuticle
Primary enamel cuticle is also called?
Fusion of the enamel organ will form the?
Reduced enamel epithelium
Also called "dental cuticle"?
Secondary enamel cuticle
Is the secondary enamel cuticle mineralized or non mineralized?
Dental cuticle is produced by?
Reduced enamel epithelium
When the reduced enamel epithelium combines with the oral epithelium, it is now called?
It divides the dental lamina into two?
Dental lamina found in the labial?
Lateral lamina strand
Dental lamina which gives rise to the succedaneous teeth?
Dental lamina proper or Successional lamina
Gives rise to the bud of permanent molars?
Accessional tooth germ
Succesional lamina is found on the labial or lingual side?
Remnants of dental lamina?
Glands of Serres
Disturbed dental lamina may cause? (3)
- Supernumerary teeth
- Cyst or tumor
- Epithelial mass
Point where OEE and IEE come together?
HERS is formed before or after the crown is completed?
After the crown is completed
Formed when HERS bend at a nearly 45 degree angle?
Determines the number of roots?
Articular membrane on the surface of the root?
What produces enameloid?
Outer root sheath cells
Remnants of HERS?
Epithelial rests of Malassez
Persistent HERS may cause? (3)
Cyst or tumors
Point where the epithelial diaphragm of a multirooted tooth will meet?
A condition where teeth may develop in abnormal locations such as in ovary and hypophysis?
Presence of supernumerary teeth?
Hyperdontia is more commonly observed in the maxilla or mandible?
90% in maxilla
Extra molars/4th molar
Intrinsic stains caused by taking antibiotic during tooth development?
Teeth being present at birth?
Mottling of the enamel?
Disturbance in morphodifferentiation of the tooth may cause? (3)