Stephen Hawking’s teeth appeared to stick out due to the effects of ALS on his facial muscles, combined with the relativ
Stephen Hawking, diagnosed with amyotrophic lateral sclerosis (ALS) at age 21, experienced progressive weakening of his muscles over decades, including those in his face
ABC (Australian Broadcasting Corporation)
. This weakening disrupted the natural balance of forces that normally keep teeth aligned. While his facial muscles became weaker, his tongue retained more strength, gradually pushing his teeth outward until a new equilibrium was reached, giving the appearance that his teeth stuck out
This phenomenon is consistent with how teeth respond to forces: they move in the direction of stronger pressure when opposing forces, such as cheek and lip muscles, are weakened
. In Hawking’s case, the outward force of the tongue was unopposed, which contributed to the protrusion of his teeth.
It is important to note that this was a physiological effect of his ALS, not a result of poor dental hygiene or neglect. ALS primarily affects motor neurons, leading to muscle atrophy, but does not directly weaken the tongue to the same extent as other facial muscles, which explains the specific dental appearance
Over time, as ALS progressed, Hawking’s physical appearance changed, including his facial structure and dental alignment, but these changes did not affect his remarkable intellectual achievements or his ability to communicate using assistive technology
In summary, Stephen Hawking’s teeth appeared to stick out because ALS weakened his facial muscles while his tongue continued to exert outward pressure, altering the natural balance that normally keeps teeth in place
ABC (Australian Broadcasting Corporation)
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