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50. Vogel RI, Lamster IB, Wechsler SA, et al. The effects of megadoses of ascorbic acid on PMN chemotaxis and experimental gingivitis. J Periodontol 1986;57:472-9.
51. El-Ashiry GM, Ringsdorf WM, Cheraskin E. Local and systemic influences in periodontal disease. II. Effect of prophylaxis and natural versus synthetic vitamin C upon gingivitis. J Periodontol 1964;35:250-9.
52. Carvel I, Halperin V. Therapeutic effect of water soluble bioflavonoids in gingival inflammatory conditions. Oral Surg Oral Med Oral Pathol 1961;14:847-55.
53. Pack ARC. Folate mouthwash: effects on established gingivitis in periodontal patients. J Clin Periodontol 1984;11:619-28.
54. Vogel RI, Fink RA, Frank O, Baker H. The effect of topical application of folic acid on gingival health. J Oral Med 1978;33(1):20-2.
55. Vogel RI, Fink RA, Schneider LC, et al. The effect of folic acid on gingival health. J Periodontol 1976;47:667-8.
56. Pack ARC, Thomson ME. Effects of topical and systemic folic acid supplementation on gingivitis in pregnancy. J Clin Periodontol 1980;7:402-14.
57. Francetti L, Maggiore E, Marchesi A, et al. Oral hygiene in subjects treated with diphenylhydantoin: effects of a professional program. Prev Assist Dent 1991;17(30):40-3 [in Italian].
58. Fitchie JG, Comer RW, Hanes PJ, Reeves GW. The reduction of phenytoin-induced gingival overgrowth in a severely disabled patient: a case report. Compendium 1989;10(6):314.
59. Steinberg SC, Steinberg AD. Phenytoin-induced gingival overgrowth control in severely retarded children. J Periodontol 1982;53(7):429-33.
60. Drew HJ, Vogel RI, Molofsky W, et al. Effect of folate on phenytoin hyperplasia. J Clin Periodontol 1987;14:350-6.