尽管使用避孕套，阴道隔膜和杀精剂能预防某些性传播性疾病，但在研究它们对发生宫颈癌危险的影响及预防HPV（人乳头病毒）感染的作用时，结果有些混乱。某些研究提示有预防作用，譬如，在美国的一项对严重宫颈非典型增生病例的回顾性研究发现，曾经使用屏障法（避孕套，阴道隔 Although the use of condoms, vaginal septum and spermicides can prevent certain sexually transmitted diseases, the results are somewhat confusing when looking at their impact on the risk of developing cervical cancer and on the prevention of HPV (human papillomavirus) infection. Some studies suggest a preventive effect. For example, a retrospective study of severe cervical atypical hyperplasia cases in the United States found that barrier methods (condoms, vaginal septum