MATRIX METALLOPROTEINASE-8 GENE EXPRESSION IN GINGIVAL CREVICULAR FLUID OF PATIENTS TREATED WITH REMOVABLE ORTHODONTIC APPLIANCES: EKSPRESI GEN MATRIKS METALOPROTEINASE- 8 DALAM CAIRAN KREVIKULER GINGIVA PASIEN YANG DIRAWAT DENGAN PIRANTI ORTODONTI LEPASAN. Dentika Dental J. 2011;16(1):57-60. doi:10.32734/dentika.v16i1.1902