Surgical options including curettage, cryotherapy and laser therapy are options. These scalers are also useful for root planing, curettage, and surgical debridement. Methotrexate with dilation and curettage is used to treat molar pregnancy. Treatment ranges from simple enucleation of the cyst to curettage to resection. D&C normally refers to a procedure involving a curette, also called "sharp curettage". Vacuum aspiration may be used earlier in pregnancy than dilation and curettage (D&C). This may be necessary prior to a uterine curettage or biopsy. Glandular odontogenic cysts tend to recur after curettage. Dilation and curettage has been practiced since the late 19th century. Following any biopsies, an endocervical curettage (ECC) is often done. Repigmentation after laser treatment of congenital nevi or superficial curettage supports this concern. Suction curettage is the preferred method of evacuation. Larger polyps may be missed by curettage. Non-restorable teeth must be extracted, followed by curettage of all apical soft tissue. Generally, lesions can be treated with electrodesiccation and curettage, or cryosurgery.