Environmental and physiological factors affecting dental fluorosis

Area of Science:

• Biochemistry
• Dental Science
• Environmental Health

Background:

• Dental fluorosis is influenced by various factors beyond fluoride intake, including nutritional status and systemic conditions.
• Individual susceptibility to dental fluorosis varies, suggesting underlying physiological mechanisms.
• Understanding these factors is crucial for accurate diagnosis and prevention strategies.

Purpose of the Study:

• To explore non-fluoride related factors contributing to dental fluorosis.
• To investigate the impact of acid-base balance and high altitude on fluoride metabolism and enamel development.
• To discuss the role of diseases affecting water balance in dental fluorosis occurrence.

Main Methods:

• Review of existing literature on fluoride metabolism, acid-base balance, and high altitude effects.
• Analysis of animal studies (rats and dogs) examining the impact of acidosis on enamel mineralization.
• Discussion of physiological mechanisms linking urinary pH, fluoride excretion, and amelogenesis.

Main Results:

• Acid-base disturbances, particularly acidosis, impair enamel mineralization, mimicking fluorosis.
• High altitude residence increases fluoride retention and can disrupt amelogenesis independently of fluoride exposure.
• Factors decreasing urinary pH enhance fluoride retention and increase fluorosis risk, while alkalosis has the opposite effect.

Conclusions:

• Acid-base balance and high altitude are significant, often overlooked, factors in dental fluorosis development.
• These factors can alter fluoride retention and directly impact enamel formation, complicating diagnosis.
• Further research is needed to elucidate the interplay of these systemic conditions with fluoride exposure in dental health.