developmental grooves造句

Developmental grooves are found on the cingulum and lying into the lingual fossa.
The buccal cusp ridges exhibit slight concavities that extend over the buccal surfaces as developmental grooves into the gingival embrasure.
Most of the surfaces are smooth, but the mesial surface of the root may have a developmental groove or a concavity.
Where the deep developmental grooves of teeth are more numerous and exaggerated, pit and fissure caries is more likely to develop ( see next section ).
It's difficult to find developmental grooves in a sentence. 用developmental grooves造句挺难的