With a ferrule, the choice of reconstruction material had no impact on the level of cervical stress.
When no ferrule was present, the NiCr post/composite combination generated greater cervical stress than cast post and cores.
In the absence of a ferrule, the NiCr composite/post combination generated greater cervical stress (254 Pa) than the cast post and core (235 Pa).
In the presence of a root canal post, cervical stress levels were lower than when no root canal post was present.
In the lateral incisor, cervical stress increased until 100° of inclination but reduced to about half by increasing the angle to 110°.
Increasing the angle of the teeth resulted in much higher cervical stresses in the incisors, but not in the canines.
Increasing the angle of the teeth resulted in much higher cervical stresses in the central incisors, but not in the canines.
Cervical tensile stresses exceeded 230 Pa in the absence of a ferrule and were less than 140 Pa when a ferrule was present.
Model 2 additionally included demographic variables (maternal age, race/ethnicity, marital status, income, education, child sex) and variables that are associated with PTB [ 10] (maternal smoking, alcohol and drug use, stress, cervical incompetence, placental previa, and gestational weight gain).
dAdjusted model includes maternal age, race/ethnicity, marital status, income, education, child sex, maternal gestational weight gain, smoking, alcohol or illicit drug use, stress, parity, cervical incompetence, and placenta previa.
cAdjusted model includes maternal age, race/ethnicity, marital status, income, education, child sex, maternal gestational weight gain, smoking, alcohol or illicit drug use, stress, parity, cervical incompetence, and placenta previa.
