By Ken Yasuhara, DDS - Aesthetic and Restorative Dentistry
February 08, 2019
Category: Oral Health
Tags: tooth erosion  
LimitAcidicBeveragestoProtectYourChildsToothEnamelfromErosion

Tooth enamel erosion is a serious issue for many children that can result in permanent impairment of oral health. The problem isn’t just bacterial acid that causes tooth decay — it’s also the high acid content of sodas, energy and sports drinks widely popular among children and teenagers today.

Enamel is made of the strongest substance in the human body, which enables it to shield the inner layers of the teeth from disease and other environmental factors. Its chief nemesis, though, is acid: when enamel interacts with high concentrations of acid for a prolonged time, its mineral content will begin to soften and dissolve, a process known as de-mineralization. Saliva is the enamel’s main protection against acid with the ability to neutralize (or buffer) acid and restore some of the enamel’s mineral content, usually within thirty minutes to an hour after we eat.

The high acid content of many popular beverages, however, can overwhelm saliva’s buffering ability, especially if a person is sipping for an extended time on an acidic drink. This kind of exposure is different from acid produced by bacteria that causes tooth decay: bacterial acid tends to concentrate in specific areas of the teeth, while the constant wash from acidic beverages will have a more generalized eroding effect on teeth.

This level of enamel loss is irreversible, which can leave a tooth in peril of decay and ultimate loss — and increase long-term dental care and costs. The best strategy is to have your child stop or significantly curtail drinking highly acidic beverages. Rather than drink sports beverages for hydration, substitute water, nature’s hydrator. Milk can also be a viable beverage substitute.

If you do allow some acidic beverages, try to limit them to mealtimes and discourage extended sipping. Look for drinks with added calcium as this can reduce the beverage’s erosive potential. The goal is to reduce the amount and duration beverage acid is in contact with tooth enamel.

Making these changes will help greatly to protect your child’s tooth enamel, and give saliva a chance to do its job protecting it. Your efforts will also increase your child’s chances of better dental health in the future.

If you would like more information on dental erosion, please contact us today to schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Dental Erosion.”

By Ken Yasuhara, DDS - Aesthetic and Restorative Dentistry
January 29, 2019
Category: Dental Procedures
ADifferentKindofChipShotforProGolferDanielleKang

While the sport of golf may not look too dangerous from the sidelines, players know it can sometimes lead to mishaps. There are accidents involving golf carts and clubs, painful muscle and back injuries, and even the threat of lightning strikes on the greens. Yet it wasn’t any of these things that caused professional golfer Danielle Kang’s broken tooth on the opening day of the LPGA Singapore tournament.

“I was eating and it broke,” explained Kang. “My dentist told me, I've chipped another one before, and he said, you don't break it at that moment. It's been broken and it just chips off.” Fortunately, the winner of the 2017 Women’s PGA championship got immediate dental treatment, and went right back on the course to play a solid round, shooting 68.

Kang’s unlucky “chip shot” is far from a rare occurrence. In fact, chipped, fractured and broken teeth are among the most common dental injuries. The cause can be crunching too hard on a piece of ice or hard candy, a sudden accident or a blow to the face, or a tooth that’s weakened by decay or repetitive stress from a habit like nail biting. Feeling a broken tooth in your mouth can cause surprise and worry—but luckily, dentists have many ways of restoring the tooth’s appearance and function.

Exactly how a broken tooth is treated depends on how much of its structure is missing, and whether the soft tissue deep inside of it has been compromised. When a fracture exposes the tooth’s soft pulp it can easily become infected, which may lead to serious problems. In this situation, a root canal or extraction will likely be needed. This involves carefully removing the infected pulp tissue and disinfecting and sealing the “canals” (hollow spaces inside the tooth) to prevent further infection. The tooth can then be restored, often with a crown (cap) to replace the entire visible part. A timely root canal procedure can often save a tooth that would otherwise need to be extracted (removed).

For less serious chips, dental veneers may be an option. Made of durable and lifelike porcelain, veneers are translucent shells that go over the front surfaces of teeth. They can cover minor to moderate chips and cracks, and even correct size and spacing irregularities and discoloration. Veneers can be custom-made in a dental laboratory from a model of your teeth, and are cemented to teeth for a long-lasting and natural-looking restoration.

Minor chips can often be remedied via dental bonding. Here, layers of tooth-colored resin are applied to the surfaces being restored. The resin is shaped to fill in the missing structure and hardened by a special light. While not as long-lasting as other restoration methods, bonding is a relatively simple and inexpensive technique that can often be completed in just one office visit.

If you have questions about restoring chipped teeth, please contact us or schedule an appointment for a consultation. You can learn more by reading the Dear Doctor magazine articles “Porcelain Veneers” and “Artistic Repair of Chipped Teeth With Composite Resin.”

By Ken Yasuhara, DDS - Aesthetic and Restorative Dentistry
January 19, 2019
Category: Dental Procedures
Tags: dental implants   dentures  
Implant-SupportedDenturesCouldBoostYourJawboneHealth

People have depended on dentures for generations—and they still do. That's because they work, both in restoring dental function and a smile marred by missing teeth.

But they have one major drawback related to bone health. That's because living bone has a life cycle: as older cells die, new ones form to take their place. The pressure generated when we chew stimulates this growth. But when this stimulus goes missing along with the teeth, the cell replacement rate slows and bone volume and density gradually diminishes.

Traditional dentures can't transmit this chewing pressure stimulus. And because they rest directly on the gum ridges, they can adversely affect the underlying bone and actually accelerate bone loss.

But implant technology potentially solves this bone loss problem with dentures by using implants rather than the gums to support them. It's a two-fold benefit: first, the implants relieve much of the irritation to the gums and bone caused by traditional dentures. Primarily, though, the implants themselves can slow or even stop continuing bone loss.

Most implants are made of titanium, not only because it's compatible with the body, but also because it has an affinity with bone. Over time bone cells grow on the titanium post imbedded in the jawbone. This process not only creates stability and durability, it can improve bone health.

In recent years dentists have incorporated implants with dentures to create two exciting treatment options. With one option, the dentist installs two or more implants in the jaw, to which a specially fitted removable denture can be attached. You would still have the ease of removing the denture for cleaning, while gaining greater stability and a reduced risk of bone loss.

The other option is a fixed denture (or bridge) attached permanently to implants. For this option, a patient's jawbone must be adequate and healthy enough to support at least four to six implants. A fixed denture is also often costlier and more complex than a removable denture, but it can feel more like real teeth. It also promotes better bone health too.

Although both options are more expensive than traditional dentures, they can pay dividends for long-term dental health. Implants could help you enjoy your new dentures and resulting smile for a long time to come.

If you would like more information on dental implant-supported restorations, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Overdentures & Fixed Dentures.”

By Ken Yasuhara, DDS - Aesthetic and Restorative Dentistry
January 17, 2019
Tags: braces   orthodontics   Invisalign  

Invisalign Clear BracesInvisalign is an innovative orthodontic method for straightening your smile that comes with multiple benefits. One of the major benefits of Invisalign is that it is discreet, unlike more traditional tooth straightening methods, such as metal braces. Invisalign straightens the teeth with soft aligner trays that are clear so they are not readily noticeable to others. The clear aligner trays allow you to straighten your teeth discreetly. Dr. Ken Yasuhara is your dentist for Invisalign in Honolulu, HI.

How Does Invisalign Work?

Invisalign straightens the teeth with aligner trays rather than the brackets and wires typical of braces. The aligner trays are custom made for each patient and a separate tray is created for each row of teeth. The trays exert gentle pressure on the teeth to move them toward the desired position. Each set of aligner trays is only worn for a few weeks before being replaced with the next set of trays. With each new set of trays, the positioning of the teeth changes slightly until they are completely straight, which takes about twelve months total, on average.

Benefits of Invisalign

Invisalign offers multiple benefits as an option for straightening your smile. A primary benefit that many patients appreciate is the discreetness of Invisalign’s aligner trays. Since the aligner trays are clear, they are barely noticeable to others. Another benefit of Invisalign is that the aligner trays are comfortable to wear since they are made from a soft and flexible plastic material. Further, the trays will not irritate the inside of the mouth, as can be the case with traditional metal braces, which have hard brackets and wires that can scratch or poke the gums.

An especially exciting benefit of Invisalign is that the aligner trays are removable! Since the trays can be taken out to eat, there is no worry about food particles becoming trapped in between the teeth and trays. Additionally, brushing and flossing are made easier when the trays are temporarily removed to clean the teeth. Your dentist for Invisalign in Honolulu can help you decide if it is the right teeth straightening option for you.

It is possible to straighten your smile both comfortably and discreetly when you choose Invisalign for straightening your smile. For Invisalign in Honolulu, HI schedule an appointment with Dr. Yasuhara by calling the dental office at (808) 947-8900.

By Ken Yasuhara, DDS - Aesthetic and Restorative Dentistry
January 09, 2019
Category: Oral Health
Tags: tooth decay  
HowaNewApproachtoTreatingDecayCouldBenefitYou

Dental caries (tooth decay) is a leading cause of tooth loss. But with prompt diagnosis and care we can often stop it before it causes too much damage.

The traditional treatment approach is simple: remove all diseased tooth structure and then restore the tooth with a filling. But this otherwise effective treatment has one drawback: you may lose significant healthy structure to accommodate a suitable filling or to make vulnerable areas easier to clean from bacterial plaque.

That's why a new treatment approach called minimally invasive dentistry (MID) is becoming more common. The goal of MID is to remove as little of a tooth's natural enamel and dentin as possible. This leaves the treated tooth stronger and healthier, and could reduce long-term dental costs too.

Here's how MID could change your future dental care.

Better risk assessment. MID includes a treatment protocol called caries management by risk assessment (CAMBRA). With CAMBRA, we evaluate your individual tooth decay risk, including oral bacteria levels, the quality of saliva flow to neutralize mouth acid, and sugar consumption. We then use our findings to customize a treatment plan that targets your areas of highest risk.

New detection methods. The real key to fighting tooth decay is to find it before it can destroy tooth structure with the help of new diagnostic technology. Besides advances in x-ray imaging that provide better views with less radiation exposure, we're also using powerful dental microscopes, lasers and infrared photography to show us more about your teeth than we can see with the naked eye.

"Less is More" treatments. In contrast to the dental drill, many dentists are now using air abrasion rather than a dental drill to remove decayed tooth material. Air abrasion emits tiny material particles within a pressurized air stream that leaves more healthy tooth structure intact than with drilling. We're also using new filling materials like composite resin that not only resemble natural tooth color, but require less structural removal than other types of fillings.

Using MID, we can treat tooth decay while preserving more of your natural teeth. This promises better long-term outcomes for future dental health.

If you would like more information on new treatments for tooth decay, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Minimally Invasive Dentistry: When Less Care is More.”





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