The patterns of tooth loss are evaluated in many selected populations in numerous countries and so the frequency of partial edentulism seems to vary widely between different countries.

The prevalence of various patterns of partially edentulous arches should be frequently revised and updated .

This could help identify the changing treatment needs of the population and provide guidelines to prevent tooth loss emphasis should be placed on dental education, improve the quality of prosthodontic care being provided to patients oral and general health promotion which should highlight the control of common oral diseases such as caries at their various stages of progression and periodontal diseases.

Additionally, regular dental check-ups should be made mandatory at schools, colleges and workplaces and community field trips should be conducted in order that increase in oral health awareness can also discourage patients attitude waiting until acute symptoms develop.

According to our knowledge, no available studies investigated the prevalence of partial edentulism among patients in faculty of dentistry Cairo university. Therefore, this study wouldbe of valuable information to oral health planners for proposing strategies that will help dentalhealth care management in faculty of dentistry Cairo,

study will be conducted on Patients above age of 20 years irrespective of sex, race, socioeconomic status having partially edentulism in either or both the arches to detect incidence and occurence of partial edentlism then detect its prevalance

Inclusion Criteria:

• Study population who satisfied following criteria were included in the study:

  1. Patients above age of 20 years irrespective of sex, race, socioeconomic status having partially edentulism in either or both the arches
  2. Individuals who are willing and cooperative for study

Exclusion Criteria:

1. Completely edentulous patients,
2. patients with teeth extracted for orthodontic purpose
3. Patients with an only missing third molar, un erupted or congenitally missing teeth, root tips,and loose teeth that were indicated for extraction were not included in the study.

Partially edentulous patients of unknown classes