Which statement about ankylosed primary molars is NOT true?

Which statement about ankylosed primary molars is NOT true?

• A. The prevalence of ankylosed teeth is lower among African-American children than Caucasian children
• B. Should be strongly considered for extraction if they are blocking the path of eruption of permanent teeth
• C. Are firmly fixed to the bone and have a "solid" sound on tapping which contrasts with the sound of normal adjacent teeth
• D. Should be strongly considered for extraction if there is no corresponding permanent tooth to erupt in their place

Answer: (A)

The statement regarding the prevalence of ankylosed primary molars among different ethnic groups is not accurate. Research has shown that the prevalence of ankylosed primary molars can vary among different populations, but it does not establish a definitive comparison indicating that African-American children have a lower prevalence than Caucasian children. Factors such as genetics, oral health practices, and environmental influences can impact the rate of ankylosis, but conclusive evidence to support this specific assertion is lacking. In contrast, the other statements reflect recognized clinical observations and treatment considerations in pediatric dentistry. For instance, ankylosed primary molars may obstruct the eruption path of permanent teeth, warranting extraction to facilitate proper alignment and eruption of the successors. Additionally, their distinctive characteristics, like being firmly fixed to the bone, produce a unique sound upon percussion compared to normal teeth. Lastly, if there is no permanent tooth to replace an ankylosed primary molar, extraction is advisable, as the premature retention of a primary tooth can lead to space loss and alignment issues.

The statement regarding the prevalence of ankylosed primary molars among different ethnic groups is not accurate. Research has shown that the prevalence of ankylosed primary molars can vary among different populations, but it does not establish a definitive comparison indicating that African-American children have a lower prevalence than Caucasian children. Factors such as genetics, oral health practices, and environmental influences can impact the rate of ankylosis, but conclusive evidence to support this specific assertion is lacking.

In contrast, the other statements reflect recognized clinical observations and treatment considerations in pediatric dentistry. For instance, ankylosed primary molars may obstruct the eruption path of permanent teeth, warranting extraction to facilitate proper alignment and eruption of the successors. Additionally, their distinctive characteristics, like being firmly fixed to the bone, produce a unique sound upon percussion compared to normal teeth. Lastly, if there is no permanent tooth to replace an ankylosed primary molar, extraction is advisable, as the premature retention of a primary tooth can lead to space loss and alignment issues.