Gingival health status survey was conducted concerning 19-23 years old studentsin Al- Mustansiria University / college of dentistry.The total sample composed of 150 students (75 males and 75 females).The clinical examination was conducted by using blunt mouth probe, followingthe (GI) described by Silness and Loe (1963).Results of this study have shown that mean of gingivitis decreases with advancingclass level with a high significant difference between all classes due to higherawareness regarding prevention of dental diseases among finished dental students.Results also show that gingivitis among males is higher than that among females forall classes because of having better oral hygiene practices than males.

Back ground: dental erosion is the irreversible loss of dental hard tissue by a direct acid attack which is due to chemical process not involving bacteria and not directly associated with mechanical or traumatic factors, or with dental caries. The aim of this study is to determine the prevalence of dental erosion among the total sample which composed of 800 children. Material and method: this survey was conducted on children aged between 11-12 year old in three primary schools in Baghdad – Al- Rusafa side. The school children participated in this study were 800 (380 boys and 420 girls), the affected group was consisting of (31) boys and (24) girls. The level of erosion was recorded by using modified tooth wear index (1994).Results of this study showed that the prevalence of dental erosion was (6.87%), distributed as (3.13%) mild erosion, (2.5%) moderate erosion and (1.25%) severe erosion. Higher prevalence was found in boys (3.87%) than girls (3%) with significant difference.A statistically significant difference (P

The aim of this study is to estimate the severity of dental caries among dentalschool students.Dental caries severity was conducted among 19-23 years old students in all classesin Al- Mustansiria University / college of dentistry. The total sample composed of 150students 30 students from each class (75 males total and 75 females total).Dental caries diagnosis was according to criteria of WHO(1).Results of the this study showed that none of the examined students were cariesfree; in another word, caries percentage was found to be 100%, DMFS valuesdecrease with advancing class level with on significant difference between all classesand increase in Fs values with a significant difference between females in all classesthis is attributed to the higher awareness regarding prevention of dental diseasesamong finish dental students.