Studies have found that periodontal disease and tooth loss are associated with increased mortality; however, associations with cause-specific mortality and all-cause mortality within specific subgroups have not been thoroughly investigated.

中文翻译：

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姐妹研究中牙周病和牙齿脱落与全因和特定原因死亡率的关联

研究发现，牙周病和牙齿脱落与死亡率增加有关；然而，与特定亚组内特定原因死亡率和全因死亡率的关联尚未得到彻底调查。