The investigators aim is to explore associations between specific types of cancer therapy, age at treatment and the presence of dental abnormalities in adolescence.

The study will help identify unique dental changes, malformations and or missing teeth that appear in adolescence as a secondary complication due to anticancer treatment (chemotherapy and or radiotherapy) given in childhood.

Materials and methods:

• Study Group: 200 patients, at least 12 years old, who were treated for Cancer at the age of 0-10 years old.
• The following data will be collected: Demographic information, Medical Status, Cancer therapy, Intraoral examination, Oral soft and hard tissue condition and radiographic examination.

Inclusion Criteria:

• were treated for Cancer at the age of 0-10 years old

Exclusion Criteria:

• None

Patients, at least 12 years old, who were treated for Cancer at the age of 0-10 years old. The maximum time span of entering the study group-up to 20 years after last session of oncology treatment.