A routine dental visit turned tragic when 9-year-old Silvanna Moreno of San Diego died just hours after undergoing an extensive root canal procedure at Dreamtime Dentistry in Vista. The dentist involved had previously been investigated in connection with a near-fatal patient incident, raising new concerns about safety and oversight.
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Silvanna had been struggling with persistent tooth pain since October 2024. After months of discomfort and attempted treatments, she was referred to the Vista clinic for a more intensive intervention. Her family hoped the procedure would finally bring her relief.

On March 18, Silvanna underwent what became a three-hour appointment that included a root canal, crown placement, and the extraction of several decayed teeth. According to reports, the dentist worked on both baby teeth and permanent teeth during the session, making it an unusually extensive procedure for a child her age.

The day before the appointment, Silvanna experienced a fever that resolved after her mother gave her children’s Tylenol. The family believed she had recovered enough for the procedure, but the fever would later become a key point of concern.

Dreamtime Dentistry stated they were unaware of any recent illness. The clinic reported that Silvanna’s mother filled out the pre-operative form marking “No” to the question of whether the child had been sick. This discrepancy has contributed to the mounting questions surrounding the circumstances of Silvanna’s death.

Following the procedure, Silvanna was taken home, but her condition worsened rapidly. Hours later, she collapsed, and despite emergency efforts, she could not be saved. Her sudden death has left her family devastated and the community searching for answers.

Authorities have since launched an investigation into the clinic, the dentist involved, and the events leading up to Silvanna’s death. Medical records, pre-operative forms, and the dentist’s past history are all under review.

The case has renewed conversations about pediatric dental safety, pre-operative screening, and the importance of transparent medical histories when treating young patients.