This is a prosthesis that addresses a condition referred to as palatopharyngeal incompetence. Palatopharyngeal incompetence broadly refers to a muscular inability to sufficiently close the port between the nasopharynx and oropharynx during speech and/or swallowing. An inability to adequately close the palatopharyngeal port during speech results in hypernasalance that, depending upon its severity, can render speakers difficult to understand or unintelligible.The potential for compromised intelligibility secondary to hypernasalance is underscored when consideration is given to the fact that only three English language phonemes – /m/, /n/, and /ng/ – are pronounced with an open palatopharyngeal port. Furthermore, an impaired ability to effect a closure of the palatopharyngeal port while swallowing can result in the nasopharyngeal regurgitation of liquid or solid boluses.

A palatal lift prosthesis addresses palatopharyngeal incompetence by physically displacing the dysfunctional soft palate in the hope of closing the palatopharyngeal port enough to mitigate hypernasal speech and/or prevent nasopharyngeal regurgitation of liquids or solids during the pharyngeal phase of swallowing. A palatal lift prosthesis consists of an oral component that stabilizes and secures the prosthesis and an oropharyngeal extension that superiorly and posteriorly displaces the impaired soft palate.

Dr. Aragon has successfully treated patients with palatopharyngeal incompetence using this prosthesis when surgery is not an option.

Case 1


An obturator is a prosthesis that artificially replaces part or all of the maxilla and associated teeth lost due to surgery, trauma or congenital problems like cleft palate. It is fabricated after complete healing of the defect has occurred.

Case 1

Case 2


Most patients who are born with cleft lip and palate are missing multiple permanent teeth. We work with other dental specialists such as pediatric dentists, orthodontist and oral surgeons to replace these missing teeth when the patients complete their growth. The patients are generally evaluated at our office at an early age (12- 13 years of age) and finish their treatment between 18-20 years of age, since most of them will require orthodontics and some extractions of teeth and bone grafting.

Case 1


A few words about us

Dr. Aragon is a board-certified Prosthodontist in Canada and in the United States. Born in Lima, Peru, where she was awarded her DDS degree in 1997, she later completed one year internship in Oral and Maxillofacial Surgery at the University of Michigan, treating severely medically compromised patients.

In 2001, she moved to the South where she received additional training and received a master’s degree and certificate in Prosthodontics from the University of Alabama at Birmingham. She moved to Canada in 2004 to join the Prosthodontics Faculty at the Schulich School of Medicine and Dentistry as an Assistant Professor.

Dr. Aragon started to practice at the London Health Science Centre in 2006, where to this date she continues to treat medically compromised patients and rehabilitates the dentition of patients who suffered from oral cancer. She also provides prosthodontic supervision to the General Practice Residents. The same year, she welcomed her daughter Catalina. In 2008, she added a baby boy, Horacio, to the London growing population.

In July of 2011, Dr. Aragon opened ARAGON PROSTHODONTICS at 203-1135 Adelaide Street North, in London, Ontario. In this brand new facility she continues to provide high quality restorative dental care to the London and surrounding communities.

Dr. Aragon is a published researcher and an adjunct reviewer with the Journal Oral and Maxillofacial Implants and the Journal of Dental Education. She is a member of various different professional organizations, including the Ontario Dental Association, the Canadian Dental Association, the Association of Prosthodontists of Canada and the American College of Prosthodontics.


Peggy Gyorffy
Joined our office as Officer Manager since its opening in July of 2011. Peggy is a skilled and dedicated team member with over 20 years of experience in the dental field. Her hobbies include quilting, glass staining, horseback riding and shopping with her daughter.
Jane Watanabe
Jane has joined our office as a CDA II in 2017. She is originally from Peru but has lived in Japan and NYC for many years before settling in London, ON.
She is a soccer and volleyball mom. Her main hobbies are to take walks with her pug Bingo and cooking for family and friends. Jane is fluent in Japanese and Spanish.