Digital x-rays show what an eye and a mirror cannot. That means decay between teeth, bone loss and infection at root tips. A sensor replaces film, so the dose is lower. Pearl32 Dentistry and Wellness in Laguna Hills takes them by your risk, not a fixed schedule. For most adults that means bitewings every one to two years.
Which x-rays might you need?
Three types cover almost everything. Bitewings show the crowns of the back teeth on both jaws in one image, which is where decay hides between teeth. Periapicals show one or two whole teeth including the root tips, and are used when a specific tooth hurts.
A panoramic image sweeps around the jaws in one pass. It is used for wisdom teeth, jaw assessment and a broad overview, but it is not detailed enough to find early decay. When depth matters, we use the cone beam scanner instead. Read about our digital equipment.
How often are they needed?
Frequency follows risk, not habit. Adults with no recent decay and healthy gums usually need bitewings every one to two years. Adults with new cavities, dry mouth, many existing fillings or active gum disease may need them every six to twelve months.
Children with cavity risk are checked more often, because decay moves quickly through thinner enamel. A full set is typically taken once, then updated every three to five years. We tell you why a particular image is needed before we take it, and you can decline any image and discuss the tradeoff with us.
What do x-rays show that an exam cannot?
Roughly a third of cavities are invisible without an x-ray. The contact point between two back teeth cannot be seen or probed. Decay starts there and works inward, and by the time it shows on the chewing surface it is often close to the nerve.
X-rays also show bone height around each tooth, which is how gum disease is tracked. They show dark areas at root tips that indicate an infected nerve, the position of unerupted teeth, cysts, and failing margins under old crowns. They also show what is healthy, which is worth knowing.
How much radiation is involved?
A digital sensor needs a fraction of the dose that film needed, commonly cited as 50 to 80 percent less. Four bitewings deliver a dose in the range of one or two days of ordinary background radiation. Flying across the country exposes you to a comparable amount.
That does not make dose irrelevant. We use a rectangular collimator to narrow the beam to the size of the sensor, take only the images that change decisions, and keep older images so we are not repeating work. Bring records from your previous dentist and we may not need new ones.
What about pregnancy and shielding?
Routine x-rays are usually postponed during pregnancy, and urgent ones are taken when a diagnosis cannot wait. The beam is aimed at your jaw, and scatter to the abdomen from a dental image is extremely small. Delay is caution, not a sign of real danger.
A lead apron with a thyroid collar is available at any visit and we will place one whenever you ask. Current guidance from radiology bodies says a well collimated digital image makes the apron largely unnecessary, but your comfort decides. Tell us if you are or may be pregnant or are nursing.
What do digital x-rays cost?
X-rays are quoted in writing, itemized, after an examination, and they are listed separately from the exam. A new patient visit normally includes the images needed to diagnose, and we tell you which ones before we take them.
We are in network with Delta Dental, Aetna, Cigna, MetLife, Guardian, Humana, Anthem Blue Cross, Blue Shield, UnitedHealthcare and other major PPO plans, and the Delta Dental, Guardian and MetLife HMO plans (full list). Most plans cover bitewings at a set frequency and a full set less often, and we check your limits before the appointment. Third party financing is available and the practice is not the creditor. Our membership plan includes preventive visits for people without insurance, and you can also review financing.
Questions people ask about digital X-Rays
Do I need x-rays if nothing hurts?
Usually yes, because most decay causes no pain until it reaches the nerve. Between the back teeth there is no way to see or feel it. Catching a cavity at the enamel stage often means a small filling, or fluoride and monitoring. Catching it when it hurts often means a root canal and a crown, which is a different cost entirely.
Can I refuse x-rays?
You can, and we will record that. We will also tell you plainly what we cannot diagnose without them, which is decay between teeth, bone levels and infection at root tips. Some conditions cannot be treated responsibly without imaging, and in those cases we may decline to proceed rather than guess. Bring recent images from another office if you have them.
How recent do my old x-rays need to be?
Bitewings within the last twelve months are usually adequate for a new patient exam at low risk. A full set within three to five years is often reusable. Ask your previous office to send the digital files rather than printouts, because the original files can be adjusted for contrast. We will tell you what else is needed after reviewing them.
Are digital x-rays safer than film?
The dose is lower, commonly 50 to 80 percent less than traditional film for the same image. Images also appear on the screen at once, so retakes from processing errors are rare, and we can enlarge and adjust contrast rather than take another picture. The chemicals used for film processing are eliminated as well.
Can x-rays be taken if I have a strong gag reflex?
Yes, with adjustments. Smaller sensors, careful positioning and breathing through the nose help most people. A panoramic image needs nothing in the mouth at all and can substitute in some situations. Nitrous oxide settles the reflex for many people and wears off within minutes, so you can drive yourself home afterward.
Does having dental x-rays taken hurt?
No. There is no needle and nothing is drilled. A small sensor is placed inside the mouth and held still for the image. Then it is removed. If you have a strong gag reflex, smaller sensors and careful positioning help most people. Breathing through the nose helps too. A panoramic image needs nothing in the mouth at all. A lead apron with a thyroid collar is available whenever you ask.
Are dental x-rays covered by insurance?
Usually, within limits. Most plans cover bitewings at a set frequency and a full set less often. We check your limits before the appointment. We are in network with most PPO plans. That includes Delta Dental, Aetna, Cigna, MetLife, Guardian, Humana, Anthem, Principal and UnitedHealthcare. X-rays are listed separately from the exam on your written estimate. Our membership plan, which is not insurance, includes preventive visits for people without a plan.
Do children need dental x-rays?
Yes, once the back teeth touch tightly enough for decay to hide between them. That is often around age four to six. Children with cavity risk are checked more often, because decay moves quickly through thinner enamel. Children with no new cavities may go one to two years between bitewings. Digital sensors use a lower dose than film. We explain each image to you and your child before it is taken.
This page is general information, not a diagnosis. What is right for you can only be decided after an examination.
Due for an exam and images?
Call Pearl32 Dentistry and Wellness at (949) 830-0074 to book an examination in Suite 450, serving the Laguna Hills community since 1994.
Pearl32 Dentistry and Wellness
24022 Calle De La Plata, Suite 450
Laguna Hills, CA 92653
