0-3yrs.txt

Caries is the most prevalent disease in our nation's children. Greater than 40% have this by kindergarten

• The dental home is an ongoing relationship between dentist and patient.
• -includes all aspects of oral health care
• -comprehensive and continuously accessible. 
• -begins as early as 6 months or 6 months after 1st tooth erupts
• -establish begins before age 12 months
• -refer to specialists when appropriate

• -transverse dimension is closest to adult size
• -anterior-posterior dimension demonstrates different growth rates for maxilla and mandible
• -Vertical dimension is the least developed at birth (40% of adult)

• The cranial vault is closer to adult size than the face
• -this mirrors neural growth (all nerve cells develop by 8th month in utero)

Cranial vault complete-->Maxilla-->Mandible

• Scammon's growth curve demonstrates when the peak growth of craniofacial structures occurs.
• -growth at 20 years is 100%
• -lymphoid tissues grow and then regress
• -neural growth slows betwen 3 and 9 years
• -maxillary grows much faster and the mandible early on
• -mandibular growth resembles the general growth curve

• 1. Growth (initiation, proliferation, histodifferentiation, morphodifferentiation, apposition)
• 2. Calcification
• 3. Eruption
• 4. Attrition

Initiation is when the bud first begins formation

Proliferation occurs when the cells begin dividing

Histodifferentiation occurs when the cell types differentiate

• Morphodifferentiation occurs during the life cycle of the tooth
• -follows histodifferentiation
• -shape begins to be laid out

Root development correlats with eruption of the tooth

Preeruptive, eruptive (prefunctional), and eruptive (functional)

Root formation begins and the tooth moves toward the bony surface

• -the root develops through gingival emergence
• -most roots are 1/2 to 2/3 developed upon gingival emergence

• Functional eruption occurs from gingival emergence to the point where a tooth meets its antagonist
• -third phase of tooth eruption

• -root formation
• -proliferation of Hertwig's epithelial root sheath
• -proliferation of connective tissue of the dental papilla
• -simultaneous growth of th ejaw
• -pressures from muscular action
• -apposition and resorption of bone

• 1. Tooth formation 7 weeks in utero
• 2. Calcification of all primary teeth evident at birth
• 3. Enamel complete by 1 year
• 4. All primary teeth erupted by 24-36 months
• 5. Primary roots complete by 3 years

1. tooth formatino of 1st molars, incisors, canines 3-6 mo in utero

2. Calcification of 1st molars evident at birth

3. Calcification of all permanent teeth (except 3rds) at 3 yrs

4. Enamel of incisors and first molars complete by 5 yrs

• Most have interdental arch spacing between 0-3 yrs
• -this occurs particularly in the incisor region
• -specifically in the primate spaces
• 

• -their receptive vocabulary is much greater than their expressive
• -18 mo old has approximately 10 words
• -3 yr old has approximately 1000 words

• Cooperative: able to take and follow instruction
• Precooperative: physically unable to cooperate. Changes at 3
• Uncooperative: able to, but unwilling to cooperate