References in periodicals archive ?
Molars, which are used as anchorage teeth, are also important, especially the first permanent molars, the compensatory differences of which have crucial roles in growth, development, and anchorage control.
For Overall Bolton ratio, tooth widths from first permanent molar to the first permanent molar on the contra lateral side were measured for both mandibular and maxillary arches separately.
Zhu, "Prevalence of 3-rooted first permanent molars among a Shanghai Chinese population," Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology, vol.
[2001] to investigate the influence of the caries status of the second primary molar's distal surface on the caries rate of the mesial surface of the proximal first permanent molar, from 6-12 years of age.
The early signs of children's acid erosion may include transparency in the front teeth, eroding the pointy edges of the teeth and weakening of the first permanent molar.
Prevalence of first permanent molar sealants in twelve-year old children by urban/rural-public/private schools in Puerto Rico Urban/Rural Weighted % With Public/Private N * % Total N Sealed N Sealants P-value Urban/public 30669 42.9 758 2.5 Rural/public 28346 39.7 966.8 3.4 Urban/Private 12343 17.3 1365 11.0 TOTAL 71358 100 3090 4.3 0.0095 * weighted by probability of selection Table 2.
The first permanent molar appears in the mouth from 5 to 7years old with no predecessor and it is one of the most affected teeth by this disease.
For example, the first permanent molar, which erupts at around 6 years in modern humans and at about 3 1/2 years in apes, erupted between 4 and 4 1/2 years in H.
One of the national health objectives for 2010 is to increase to 50% the proportion of children aged 8 years that have received dental sealants on their first permanent molar teeth [3].