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Led by Gore Health dentist Haneen Alayan the team visited Gore’s rest-homes and provided free checkups and treatment for about 50 patients.
Dr Haneen said the oral health of an increasing number of older residents was declining throughout New Zealand.
"I don’t know if crisis is the right word but it’s almost like an oral health crisis in the rest-homes and it really is a major issue."
It was a complicated situation with many factors contributing to the problem including people keeping their teeth longer.
Dentists had taken a different approach in the past 30 years to help people keep their teeth rather than pulling them out.
However, once people could not take care of their teeth, or have regular dental checkups, their oral health deteriorated rapidly.
"They get a lot of infections and decay and gum problems. It becomes very difficult to treat this at this stage."
Rest-home resident Derek Tuck (87) said he thought it was a good idea having the mobile service visit.
"I thought it was very professional."
He was having trouble with his new dentures.
The dentist made a small adjustment to the dentures which altered the fit, he said.
Poor oral health affected overall health and wellbeing, Dr Haneen said.
"They can seriously decrease quality of life."
Another barrier was the cost of going to the dentist.
"You can’t really afford routine dentistry on the pension."
Visiting the rest-homes had been on her to-do list for a long time, she said.
She had secured about $7000 of funding from the Mars Wrigley Foundation, the Gore Hospital and Community Health Trust, Rotary of Gore and Craigs Investment Partners.
The equipment needed for the weekend was hired from Zaara Mobile Dental Services of Dunedin. Dental services director Sandra Mason said the business specialised in travelling to patients who for various reasons could not visit the dentist.