The effect of double (S238F/W159H) mutations on the structure and dynamics of PET degrading enzyme.

Polyethylene terephthalate (PET) is one of the highly produced synthetic polymers worldwide and had acquired attention due to its impact resistance, high clarity, and light weight. PET has become the first choice in making disposable bottles, leading to massive scales of production resulting in very high utilization across various facets of our daily life. Unfortunately, PET accumulates as waste and is highly resistant to biodegradation, thus presenting a serious threat to the ecosystem.

Two sides of a coin: A report of two contrasting cases of adenomatoid odontogenic tumor with unusual presentations.

This study aims to report two distinct cases of adenomatoid odontogenic tumor (AOT) with contrasting presentations. The first case involved a 12-year-old female patient with the presence of AOT in the posterior mandible extending into the mandibular ramus up till the coronoid process which is a rare reported site for AOT and the second case is of a 19-year-old male patient with the tumor in the anterior maxilla with an impacted central incisor. Both cases were successfully managed via surgical enucleation and are under regular follow-ups without any complication.

Recurrence of a Peripheral Ossifying Fibroma as a Pyogenic Granuloma Within 1 Week: A Case Report.

Introduction: Peripheral ossifying fibromas (POFs) and pyogenic granulomas (PGs) are non-neoplastic reactive lesions of gingiva that usually affect young females and are usually located in the anterior maxilla. It is possible to misdiagnose POF as PG, peripheral giant cell granuloma, or odontogenic tumors. Histopathologic examination is recommended and is essential for an accurate diagnosis of such lesions, and differential diagnosis is also important because POFs have a tendency to recur.