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Fort Worth Dentist Accused of Giving 4‑year‑old Lethal Doses of Sedatives During Routine Procedure, Police Say

Investigators say the 4-year-old had a toxic meperidine level and Hemphill used the wrong overdose treatment during the procedure.

  • On Wednesday, Fort Worth dentist Chrishelle Hemphill, 48, was arrested and charged with injury to a child causing serious bodily injury following an investigation into the April death of 4-year-old Aithana Arriaga at Cuddle Kids Dental.
  • During what began as a routine tongue-tie procedure on April 1, investigators say Hemphill administered Meperidine along with two additional sedatives and nitrous oxide before Arriaga went into distress and did not wake up.
  • Testing showed Arriaga's meperidine level was 793 nanograms per milliliter, far exceeding the normal adult range of 200 to 500 nanograms. The medical examiner told investigators the medication was double-dosed and would have been toxic for an adult.
  • The Tarrant County Medical Examiner ruled Arriaga's death meperidine toxicity, while the Texas State Board of Dental Examiners is reviewing whether to investigate Hemphill, who has been licensed in Texas since 2017.
  • Arriaga's parents memorialized their daughter on a GoFundMe page, describing her as "filled with life and kindness," saying her presence "always lit up a room and brought so much joy to everyone around her.
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A dentist in Fort Worth, Texas, was arrested after being accused of giving lethal doses of medication to a 4-year-old girl during a procedure.

·Los Angeles, United States
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NBC Dallas-Fort Worth broke the news in Fort Worth, United States on Wednesday, July 15, 2026.
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