1. DR.SHAHZADI TAYYABA HASHMI DNT 243

2. GINGIVAL CYST OF ADULT:  Usually form after the age 40  Clinically, they form dome-shaped swellings less than 1cm in diameter.  They are lined by very thin, flat, stratified squamous epithelium.  Can be treated by Enucleation GINGIVAL CYST OF ADULT:  Usually form after the age 40  Clinically, they form dome-shaped swellings less than 1cm in diameter.  They are lined by very thin, flat, stratified squamous epithelium.  Can be treated by Enucleation

3. PERIAPICAL CYST: An Odontogenic cyst derived from rests of MALASSEZ that proliferate in response to inflammation Rests of MALASSEZ are the remnants of HERTWIG’S EPETHELIAL root sheath that persist in the periodontal ligament after root formation is complete PERIAPICAL CYST: An Odontogenic cyst derived from rests of MALASSEZ that proliferate in response to inflammation Rests of MALASSEZ are the remnants of HERTWIG’S EPETHELIAL root sheath that persist in the periodontal ligament after root formation is complete

4. Cyst arises from rests of MALASSEZ, which enlarge in response to inflammation elicited by bacterial infection of pulp Proliferation of epithelial lining and fibrous capsuleHydrostatic pressure of cyst fluidRESORPTION of surrounding bone

5.  Develops at the apex of root adjacent to pulp canal opening  Measures less than 1cm in diameter RADIOGRAPHIC FEATURES: Appears as \ rounded, well-circumscribed radiolucency at the apex of a non-vital tooth  Develops at the apex of root adjacent to pulp canal opening  Measures less than 1cm in diameter RADIOGRAPHIC FEATURES: Appears as \ rounded, well-circumscribed radiolucency at the apex of a non-vital tooth

6.  Characterized by a cavity lined with a layer of non-keratinized Squamous epithelium  Cysts are usually inflamed and neutrophils are present within the epithelial lining TREATMENT:  Surgical enucleation after extraction  If Periapical cyst is not removed, residual cyst may develop  A cyst that remains at the site of previously extracted tooth Is termed as Residual cyst  Characterized by a cavity lined with a layer of non-keratinized Squamous epithelium  Cysts are usually inflamed and neutrophils are present within the epithelial lining TREATMENT:  Surgical enucleation after extraction  If Periapical cyst is not removed, residual cyst may develop  A cyst that remains at the site of previously extracted tooth Is termed as Residual cyst

7. Nasopalatine duct cystsNasolabial cyst

8. CLINICAL FEATURES:  Slow growing cysts  Occasionally they cause intermittent discharge with a salty taste  May cause swelling in the midline of the anterior part of the palate near the incisive foramen RADIOGRAPHIC FEATURES:  Oval or heart shaped radiolucency located in the midline of anterior maxilla between the roots of central incisors TREATMENT:  Surgical enucleation using a palatal approach CLINICAL FEATURES:  Slow growing cysts  Occasionally they cause intermittent discharge with a salty taste  May cause swelling in the midline of the anterior part of the palate near the incisive foramen RADIOGRAPHIC FEATURES:  Oval or heart shaped radiolucency located in the midline of anterior maxilla between the roots of central incisors TREATMENT:  Surgical enucleation using a palatal approach

9.  A developmental cyst of the soft tissues of the anterior mucobuccal fold beneath the ala of the nose  Also known as Nasoalveolar Cyst CLINICAL FEATURES:  Unilateral or bilateral painless soft tissue swelling  Common in females TREATMENT  Surgical ENUCLEATION  A developmental cyst of the soft tissues of the anterior mucobuccal fold beneath the ala of the nose  Also known as Nasoalveolar Cyst CLINICAL FEATURES:  Unilateral or bilateral painless soft tissue swelling  Common in females TREATMENT  Surgical ENUCLEATION

11. BENIGN EPITHELIAL NEOPLASMS: 1. AMELOBLASTOMA and its variants 2. SQUAMOUS ODONTOGENIC TUMOUR (SOT) 3. CALCIFYING ODONTOGENIC TUMOUR (COT) 4. ADENOMATOID ODONTOGENIC TUMOUR (AOT) 5. CALCIFYING ODONTOGENIC CYST BENIGN MIXED EPITHELIAL AND CONNECTIVE TISSUE NEOPLASMS: AMELOBLASTIC FIBROMA BENIGN EPITHELIAL NEOPLASMS: 1. AMELOBLASTOMA and its variants 2. SQUAMOUS ODONTOGENIC TUMOUR (SOT) 3. CALCIFYING ODONTOGENIC TUMOUR (COT) 4. ADENOMATOID ODONTOGENIC TUMOUR (AOT) 5. CALCIFYING ODONTOGENIC CYST BENIGN MIXED EPITHELIAL AND CONNECTIVE TISSUE NEOPLASMS: AMELOBLASTIC FIBROMA

12. BENIGN CONNECTIVE TISSUE NEOPLASMS  ODONTOGENIC FIBROMA  ODONTOGENIC MYXOMA  CEMENTOBLASTOMA MALIGNANT EPITHELIAL NEOPLASMS  ODONTOGENIC CARCINOMAS  CLEAR CELL ODONTOGENIC CARCINOMA MALIGNANT CONNECTIVE TISSUE NEOPLASMS  ODONTOGENIC SARCOMAS BENIGN CONNECTIVE TISSUE NEOPLASMS  ODONTOGENIC FIBROMA  ODONTOGENIC MYXOMA  CEMENTOBLASTOMA MALIGNANT EPITHELIAL NEOPLASMS  ODONTOGENIC CARCINOMAS  CLEAR CELL ODONTOGENIC CARCINOMA MALIGNANT CONNECTIVE TISSUE NEOPLASMS  ODONTOGENIC SARCOMAS

13.  Also known as PINDBORG TUMOUR  Usually present between age 40 and 70  Most commonly forms in posterior mandible  Locally invasive but does not metastasize  May be unilocular or multilocular TREATMENT:  Treated by excision with a small margin  Also known as PINDBORG TUMOUR  Usually present between age 40 and 70  Most commonly forms in posterior mandible  Locally invasive but does not metastasize  May be unilocular or multilocular TREATMENT:  Treated by excision with a small margin