Laser Dentistry, Cone Beam Imaging Among Our Advanced Features!

Posted on Nov 15, 2023 by William J. Claiborne, DDS MS

Like your “adult” teeth, your gum tissues are irreplaceable. Without question, they deserve the care and attention that come with keeping them healthy and doing their job.

Gum tissues are designed to protect the structures underneath. These include bones, tooth roots, tendons, and muscles to prevent entry of harmful bacteria. Gums are designed to snugly wrap the base of each tooth to keep bacteria from penetrating sensitive root segments of teeth.

Without this protective seal around teeth, the potential for periodontal (gum) disease greatly increases. And gum disease is at concerningly high levels in the U.S. with an estimated 47% of adults having some level of gum disease.

I believe that this high level of gum disease is largely in part due to Americans not being fully familiar with the symptoms. Some are easily ignored or “brushed off” as normal. This is why it is important to be familiar with the signs and symptoms, which include:

• Red, swollen or tender gums or other pain in your mouth
• Bleeding while brushing, flossing, or when eating certain foods
• Gums that pulling away from the base of teeth, making them appear teeth longer
• Loose or separating teeth
• Pus between your gums and teeth
• Sores in your mouth
• Persistent bad breath
• A change in the way your teeth fit together when biting
• A change in the fit of partial dentures

If you are experiencing any of these symptoms, you are urged to seek care with a periodontal specialist as soon as possible. This disease will only worsen without treatment.

Why should you be concerned about periodontal disease?

Gum disease is the nation’s leading cause of adult tooth loss. Additionally, research has linked the bacteria of periodontitis with serious health problems. These include heart disease, stroke, arthritis, diabetes, some cancers, preterm babies, erectile dysfunction (ED) and high blood pressure. Studies on links to Alzheimer’s disease are showing concerning correlations.

A periodontist is an expert in the treatment of all stages of gum disease, including gingivitis, periodontal disease, and the advanced form of periodontitis.

In addition to having these specific skills, I’d like to share the benefits of some of our amazing technology we make available to our Western NC patients. One with a wide range of benefits to patient care is our Dental Laser.

Nd: YAG Dental Laser: This is a small, hand-held device that eliminates or greatly minimizes bleeding during procedures. It also reduces numbing requirements, removes bacteria and easily uncovers gum tissue where dental implants have been placed.

Additionally, laser dentistry can quickly repair oral ulcers and beautifully re-contours or repairs gum tissue with a precision line. Some specific treatments that are ideal for a dental laser include:

Canker & Cold Sores: The laser is also ideal for rapid healing of canker and cold sores. Laser therapy can halt the progression of canker sores, reducing the pain in a day or so. Otherwise, they can last up to 2 weeks. When it comes to cold sores, they are best treated with our laser when the very first symptom arises. Tingling or burning sensation is the first sign that a cold sore is about to erupt. Although lasers can still treat these lesions in later stages, the treatment is most effective in initial stages. Most patients notice significant improvement in comfort after laser treatment with a much shorter duration.

Gum Disease Treatment: In our office, we also use a dental laser to destroy the bacteria of gum disease. This technology also speeds the process and heightens your comfort, saving you treatment time with faster healing.

Correcting a “Gummy Smile”: This is when a smile shows too much gum tissue above upper teeth when smiling fully. We correct this in a procedure known as crown lengthening. In this, a gingivectomy adjusts the height of gum tissues so the smile has a more even smile line. This may involve the use of a dental laser, which provides a precision line and speeds healing.

Balancing a smile line: A gingivectomy is also advised to rebalance the frame of gum tissues that arch the teeth visible in a smile. When one or two teeth have different heights of gum tissue, the smile has a jumbled look. A dental laser can even out the smile line and enhance the beauty of a smile.

Saving a tooth broken near the gum line: When a tooth breaks at or near the gum line, it often requires removal. In some cases, however, we can save the tooth by exposing enough of the structure to receive a crown. This helps the patient to avoid removal and thereby preserves the supporting jaw bone.

In our Asheville NC periodontal dental office, we feature additional technologies, some of the most advanced in the industry. These include:

LANAP Protocol Using PerioLase MVP-7: This process is designed to efficiently and effectively treat periodontitis (advanced gum disease) through laser technology. Treatment is administered with minimal (or no) discomfort and recovery time is minimal. Amazingly, this technology has also been able to stimulate bone regrowth in damaged areas.

Cone Beam 3D Imaging: These views allow us to see your jaw in 3D dimensions and to be able to view it at varying angles. This enables us to see what used to be hidden from view.

Cone Beam images are often used to assess:
• Dental Implant Positions
• Temporomandibular Joints (TMJ)
• Airway Passages
• Bone Structure Damage or Bone Loss
• Teeth, Tooth Roots and Facial Structures
• Signs Of Infections, Cysts, Or Tumors

CS 3600 Intraoral Scanner: Through this process, our patient no longer have impressions made with bulky, goopy trays held in their mouths. This technology quickly and comfortably scans the mouth’s interior for digital impressions using a small, handheld scanner. It can also reach difficult–to–access areas in the patient’s mouth with improved patient comfort.

Simplant Dental Software for Computerized Dental Implant Placement: This system helps in pre-surgical positioning of dental implants on the computer, using a 3D model of the patient’s jaw. This aids in the selection of the implant type to ensure a precision fit.

Intraoral Camera Technology: This provides outstanding quality of images within the mouth. These images are sent to screen for a clear, crisp view so we can confer with patients on specific treatment needs.

Computer Imaging In Treatment Suites: Treatment suites are equipped with computers for convenient image sharing with patients.

Oral & IV Sedation: We take patient comfort very seriously in our Asheville periodontal dental office. That’s a commitment we make to every patient at every appointment. Here, patient comfort is supported by our sedation options. These include oral and I.V. sedation. Also referred to as “twilight sleep” or “sleep dentistry,” these sedatives are administered by a highly-skilled anesthesiologist who uses advanced safety monitoring equipment throughout the patient’s procedure.

My staff and I also take great pride in providing patients with an environment of respect. Some adults come to us embarrassed by the condition of their oral health or missing teeth. Here, we strive to make patients feel they are in the right hands in the right place.

If tooth loss has occurred, a periodontist also specializes in the selection and placement of all types of dental implants. Dental implants, for many reasons, are the preferred option for tooth replacement.

Call 828-274-9440 to schedule a consultation in our state-of-the-art Asheville periodontal dental office. New patients are always welcome and a referral is not always necessary.

A “Lecture-Free” Look At Cigarettes & Your Smile

Posted on Oct 11, 2023 by William J. Claiborne, DDS MS

In this article, I’m going to address cigarette smoking as it affects oral health. This is not intended to lecture or chastise an adult for making a choice to smoke or those caught up in the addictive grip of nicotine. My goal is to relay factual information regarding oral health for smokers so they can better protect their smiles.

Because I’m a native North Carolinian, I’ll begin by sharing some information on our State, as provided by 2018 stats from the CDC (Centers for Disease Control & Prevention).

In 2018, the percentage of adults in North Carolina who smoked was reported as 17.4% (of every 100 adults). The CDC shared findings of all states, with smoking ranged from nearly 9 of every 100 adults in Utah (9.0%) to 25 of every 100 adults in West Virginia (25.2%).

They also shared that cigarette smoking was lowest among those with a graduate degree (3.2%) and highest for those who had only achieved a GED certificate (30.7%). Those with a high school diploma showed a lower percentage of nearly half of the GED level adults at 17.1%.

As an Asheville periodontal dental specialist, smoking is a particular concern since many people are unaware of the oral health risks. While many smokers are familiar with the risks smoking poses related to cancer and other diseases, smoking is also terribly harmful to your smile.

For instance, smokers have a greater risk of periodontal (gum) disease. The drying effect that smoking has on the soft tissues in the mouth offers an ideal breeding ground for oral bacteria. This enables easier entry of oral bacteria into the structures that support tooth roots.

According to the Centers for Disease Control & Prevention (CDC), a smoker has twice the risk for gum disease compared to that of a nonsmoker.

As oral bacteria thrive and reproduce in the mouth, gum tissues become tender and inflamed. These are signs of gingivitis, the beginning stage of gum disease.

Gum disease at this stage can cause persistent bad breath, swollen gums and gums that bleed easily when brushing. As it progresses, gum tissues turn red or purple from inflammation. Pus pockets may form at the base of some teeth. This advanced stage is known as periodontitis.

Eventually, the infectious bacteria penetrate below the gum line and attack supporting bone and the tissues surrounding tooth roots. This can cause teeth to loosen and eventually require removal. Gum disease is the nation’s leading cause of adult tooth loss.

Losing teeth is detrimental to your overall health and not a normal part of the aging process. Studies have shown that people who wear dentures die an average of ten years earlier than those who keep their natural teeth.

Denture wearers also have higher incidences of pneumonia, and worse. A 2015 report by NBC News shared findings surrounding dentures and MRSA biofilm. The report included a dental specialist’s warning that, “Concern about biofilms on dentures is growing as researchers continue to identify links between oral bacteria and heart disease, chronic obstructive pulmonary disease or COPD, and respiratory diseases, including aspiration pneumonia.”

Many smokers are aware that they have stained teeth and more-frequent bad breath than non-smokers. They also have slower healing periods after procedures such as extractions, gum treatment and oral surgery.

Although a hygienist may go slowly and gently, dental cleanings are typically less comfortable for smokers. This is because smoking causes a greater buildup of plaque. With gum tissues already tender from the bacterial irritation of plaque, removing buildup from between and around the base of teeth adds to the discomfort of inflamed tissues.

According to the American Dental Association (ADA), smoking increases the risks of oral cancer, lesions inside the mouth, enamel erosion and tooth loss in addition to periodontal (gum) disease.

If you vape, remember that nicotine in any form is a hazardous force in the mouth. And the vapor itself is not safe for oral health.

Vaping (using e-cigarettes) delivers nicotine through an inhaled mist. Although the vapor is generally not labeled as “dangerous,” one study of some e-cigarette products found the vapor contains known carcinogens and toxic chemicals, including, propylene or polyethylene glycol, glycerin, and additives. And, its nicotine is no less harmful to the user as that delivered via cigarette smoke.

Unfortunately, many cigarette users switch to vaping based on the perception that “e-cigs” are a safer alternative. For those hoping to wean themselves off cigarettes through this switch, very few achieve that goal as a result.

A 2018 report by the National Academy of Sciences, Engineering, and Medicine concluded there was “evidence that e-cigarette use increases the frequency and intensity of cigarette smoking in the future.”

Although the focus in this article is meant to be on oral health, allow me to reiterate some of the benefits of “kicking the habit” …

• Smokers have a decreased life expectancy of an average of 10–15 years compared to non-smokers.


• Smoking is linked to nearly a third of all cancer diseases and deaths.


• Pregnant women who smoke have a higher risk for first-trimester spontaneous abortion, preterm births, low birth weight babies and sudden infant death syndrome (SIDS).


• Women who smoke are at risk for early menopause while men who smoke are more at risk for impotency.


• People who breathe in your “second hand” smoke (what you exhale) are subjected to over 50 known carcinogens and other harmful chemicals.

For those who are able to give up smoking, the effort is well worth it. The positive effects can be felt almost immediately. In about 48 hours, damaged nerve endings begin to restore. The sense of smell and taste begin to return to normal.

“Quitters” also notice their breathing is easier in about 3 days and they have fuller air intake. Oral health improves within 2 weeks as blood circulation in the gums and teeth returns to nearly that of non-smokers. Heart attack risk also declines with blood flow greatly improving. Activities are easier and the constant smokers cough is gone.

In our Asheville periodontal office, our goal – for every patient – is to help each achieve optimal oral health and a smile he or she is proud to share. For those who smoke, we make individualized recommendations so the potential for achieving this is favorable.

If tooth loss has already occurred, we are specialists in the treatment of all stages of gum disease and in the diagnosis and placement of dental implants. We will be happy to discuss the dental implant system that may be best for your needs.

Or, if dental fear or anxiety have kept you from receiving regular dental care, ask us about oral or IV sedation (“twilight sleep”). These sedatives are delivered by an MD of anesthesia for your optimal safety and comfort. And, in all procedures, we make patient comfort a high priority.

Call 828-274-9440 to schedule an examination.

Sources:

https://www.cdc.gov/tobacco/data_statistics/fact_sheets/adult_data/cig_smoking/index.htm#:~:text=This%20means%20an%20estimated%2028.3,with%20a%20smoking%2Drelated%20disease.&text=Current%20smoking%20has%20declined%20from,every%20100%20adults)%20in%202021.

https://www.cdc.gov/tobacco/campaign/tips/diseases/periodontal-gum-disease.html

https://www.sciencedaily.com/releases/2016/11/161116101821.htm

https://www.nbcnews.com/healthmain/dirty-dentures-dangerous-mrsa-may-be-lurking-dentists-say-662637

https://www.cdc.gov/tobacco/basic_information/e-cigarettes/index.htm

Let’s Talk About Your Breath.

Posted on Sep 28, 2023 by William J. Claiborne, DDS MS

Who, me?

While many people may suspect their breath is less-than-fresh, most don’t realize that others are noticing. And, let’s face it – no one wants to be associated with bad breath.

Bad breath that is persistent, or halitosis, is not just the stale odor in your mouth when you wake up or the lingering scent of onions on a burger you had for lunch. Halitosis is typically a symptom that results from other conditions. While chewing gum and breath mints may temporarily improve the odor, going bad breath will continue until the root cause has been determined and treated.

I’ve often heard, “If you think you might have bad breath, you probably do.” To check your own breath, Colgate suggests: “Try the sniff test—there are a couple of ways to do it. If you lick your wrist, let it dry for a moment, then take a whiff, you should be able to get an idea if your breath has an odor too. Another method is to floss toward the back of your mouth, then smell the floss.”

If you feel bad breath is a constant problem, then halitosis is likely what needs to be the focus. And, where is it originating? Gum disease? GERD? Diabetes?

It may make you feel better to know that halitosis is actually fairly common. It is estimated to affect 1 in 4 people worldwide. It may be so common because the reasons it exists can vary widely. These can include:

• Poor oral hygiene – Without a thorough at-home oral hygiene routine, oral bacteria accumulate. At minimum, twice-daily brushing, flossing and 6-month dental cleanings are needed to keep harmful bacteria under control. If not, plaque forms, which is the sticky film that layers over teeth and gums. Plaque can harden into masses of bacteria known as tartar. Tartar can no longer be removed by brushing and flossing.

• Gum disease – The early stage of gum disease is gingivitis. This is an inflammation of gum tissues that cause gums to swell, become tender and bleed easily when brushing. Untreated gingivitis can lead to periodontitis, which damages gum tissue and can lead to tooth and bone loss of the structures that support natural teeth.

• Dry mouth – Saliva is the mouth’s natural rinsing agent, removing food particles and bacteria from the mouth. Without adequate saliva flow, it can lead to halitosis. Smoking, certain medications, and some foods and beverages contribute to oral dryness.

• Gastroesophageal reflux disease (GERD) – This digestive disorder allows stomach acids to seep back into the esophagus, the tube that takes food from your mouth to your stomach.

• Nasal and airway infections – When congestive mucus from conditions like sinus infections and pneumonia are coughed up, a foul odor can emerge from the mouth.

• Diabetes – People with diabetes have a higher risk of gum disease. By the same token, gum disease can make it harder to manage diabetes because of increased blood sugar.

• Liver disease or kidney disease – The liver and kidneys are designed to filter toxins out of your body. When people have liver or kidney disease, these toxic substances aren’t being cleared out, resulting in halitosis.

• Sjögren’s syndrome – This autoimmune disease can lead to muscle pain, dry eyes, dry skin and dry mouth (which is often linked to halitosis).

• Head and neck cancers – Oral or throat cancers cause sores that don’t heal, mouth pain, difficulty swallowing, a lump in your neck and unexplained weight loss.

If you have bad breath that doesn’t go away, schedule an appointment with your dentist. If halitosis is due to poor oral hygiene, a dental cleaning or periodontal (gum) procedure should help. If you have healthy teeth and gums, then halitosis may be linked to an issue in another part of your body.

If halitosis is a symptom of another condition somewhere in your body, your primary healthcare provider can help you with proper diagnosis and treatment. Once your physician determines the cause of your halitosis, he or she can develop a treatment plan tailored to your specific needs.

However, if gum disease is the cause, a periodontist can help resolve your problem in the most conversative yet effective process possible. If gum disease is the cause for your halitosis, a procedure known as scaling and root planing may be advised. This helps to reach inflammatory bacteria that have moved down below the gum line.

Once your gums are restored to a healthy state, your periodontist may advise added at-home steps, such as a special mouthwash to combat certain bacteria in your mouth. However, proper oral hygiene is the best way to keep your breath smelling clean and fresh. Here are some general guidelines:

• Use an alcohol-free antibacterial mouthwash.

• See your dentist regularly for checkups and cleanings. For some people, this may be every six months. But others may need more frequent visits to keep their oral health in check.

• Keeping a moist mouth is very important to oral hygiene. Drinking plenty of water during the day is advised. Colas, sweet tea, and energy drinks actually make dryness worse. You should also monitor the medications you take (both prescription and over-the-counter) and look for side effects that include oral dryness. And, smoking is one of the worst contributors of all to oral dryness.

• Proper brushing and flossing is necessary. Brush for at least two minutes twice daily and rinse thoroughly. Use a circular motion rather than scrub teeth back and forth to avoid damaging tender gum tissues. Never use a hard bristle tooth brush or brush with harsh substances such as baking soda!

• The tongue harbors a significantly high percentage of oral bacteria. After brushing, use a tongue scraper to uproot oral bacteria embedded in the grooves of the tongue. This will significantly lower bacteria levels. A study at the State University of New York at Buffalo School of Dental Medicine found that 80 to 90% of bad breath comes from bacteria on the tongue.

• Boost the production of saliva by using sugar-free chewing gum, sucking on sugar-free candy or eating healthy foods that require a lot of chewing. Your dentist might recommend or prescribe products that can produce artificial saliva or help your body produce saliva.

• Avoid alcohol, caffeine and tobacco products because they can dry out your mouth.

It is also important to know the signs of gum disease (bleeding or sore gums, persistent bad breath, receded gums, and/or gums that are red rather than a healthy pink). If these are present, it is important to see a periodontal specialist as soon as possible. Gum disease will only worsen without treatment. It can also allow infectious bacteria to enter the bloodstream, which research has linked to serious (and even deadly) health problems.

Call our Asheville periodontal dental office to schedule an examination or begin with a consultation. If fear or anxiety has prevented you from regular dental visits, we can discuss several options (including oral or IV sedation) to provide comfortable, relaxed appointments. Call 828-274-9440.

Sources:
http://www.dentistryiq.com/articles/2014/04/a-deeper-look-into-tongue-cleaning.html
https://my.clevelandclinic.org/health/diseases/17771-bad-breath-halitosis
https://www.colgate.com/en-us/oral-health/bad-breath/how-to-tell-if-you-have-bad-breath#

 

 

Beware of Hidden Contributors to Gum Disease, Tooth Loss

Posted on Aug 19, 2023 by William J. Claiborne, DDS MS

Decades ago, oral health was something many people took lightly, often waiting until something hurt to see a dentist. The fierce pain of a cavity or abscess or the sharp jolt of something hot or cold on an area of gum recession were motivators to for a dental visit.

However, Americans are now realizing how very important their oral health is in how it relates to overall health.

The correlation lies with bacteria that live within the gum tissues. While all mouths contain “good” and “bad” bacteria, research has determined that the bad type can cause problems within and outside of the mouth.

The bad bacteria are inflammatory. An accumulation of these inflammatory bacteria are what lead to periodontal (gum) disease. Gum disease is the nation’s leading cause of adult tooth loss. Additionally, advanced periodontal disease – periodontitis – can trigger or even worsen serious health condition far beyond the mouth.

Although gum disease can begin without any obvious symptoms, once it exists, progression occurs in three stages, which are:

• Gingivitis – As the initial stage of gum disease, inflammation is triggered by plaque buildup at the gum line. When daily brushing and flossing fail to thoroughly remove plaque, toxins form that cause irritation to the gum tissues. Once signs emerge, they may include seeing blood in the sink when brushing or having sore, swollen gums. At this stage, however, damage may be reversed with prompt response.

• Periodontitis – As the disease advances, the bone structures and fibers that support teeth are damaged by the destruction of infectious oral bacteria. At this stage, inflamed gums form pockets below the gum line, filling with bacteria-laden plaque.

• Advanced Periodontitis – In the advanced stage of gum disease, fibers and bone supporting natural teeth are destroyed. This can cause teeth to shift or loosen, requiring aggressive treatment to prevent tooth loss. Eventually, some teeth may require removal.

As devastating as tooth loss can be to one’s overall health, the bacteria of gum disease can enter the bloodstream. Research has shown this infectious bacteria can trigger inflammatory reactions elsewhere in the body, correlating to heart disease, stroke, high blood pressure, some cancers (including lung and pancreatic), diabetes, arthritis, impotency, preterm babies, Alzheimer’s disease and more.

Obviously, people should be highly-committed to the care of their oral health. Yet, statistics in America along these lines are not impressive. The Center for Disease Control’s Division of Oral Health cites that 1 out of every 2 American adults 30 and over has periodontal disease. They also shared that periodontal disease is higher in men than women (56.4% vs. 38.4%) with high prevalence rates among smokers (64.2%) and adults 65+ (70.1%).

In addition to your twice-a-year dental check-ups and cleanings, there are other ways to support oral wellness between visits. One is in keeping the mouth moist, supporting sufficient saliva flow.

When saliva flow is insufficient, bacteria are able to accumulate and multiply rapidly. In addition to oral dryness as a part of the aging process, contributors can be consuming alcoholic beverages, caffeine, and as a side effect of many medications (both OTC and Rx).

One reason to keep your dental professionals aware of ALL the medications your take is in how they can interact with certain procedures, including numbing agents. For example, medications to reduce blood clotting, which lowers your risk for stroke and heart disease, can cause bleeding problems during oral surgery or periodontal treatment.

For those who take medications that help to strengthen bones, these have been associated with a rare but serious condition called osteonecrosis of the jaw. Simply put, it refers to death of the bone. The risk of these prescriptions is greater for those administered by injection or intravenously.

Osteonecrosis of the jaw commonly occurs after dental procedures (tooth extraction, implant placement). Over 90% of those who have experienced osteonecrosis are those who have taken the medication in repeated high doses due to cancer or other diseases.

However, 10% who experienced osteonecrosis were taking much lower doses, mostly intended to treat osteoporosis.

Certain medications also affect the ability to taste, including cardiovascular agents, central nervous system stimulants, non-steroidal anti-inflammatory drugs, respiratory inhalants and nicotine skin patches.

Some medications can also cause the development of oral sores, inflammation or discoloration of gum tissues in the mouth. These oral sores or discolorations may arise from taking medications for blood pressure, oral contraceptives and chemotherapy agents.

Dry mouth is a common side effect of a wide variety of medications, including prescriptive and over-the-counter. These include antihistamines, decongestants, painkillers, high blood pressure medications, muscle relaxants, drugs for urinary incontinence, anti-depressants and many others. Drying causes the soft tissues in the mouth to become inflamed and makes you more susceptible to infection. When saliva flow is depleted, your risk for tooth decay and gum disease increases.

Supplements that may seem unconnected to your oral health can actually effect your care more than you realize. It is important for your dentist to know if you take…

• Ginkgo biloba or evening primrose –  These herbs can reduce your blood’s ability to clot, possibly leading to excessive bleeding during and/or after a dental procedure.

• St. John’s Wort – This herb, which is often taken to reduce anxiety, can interfere with the metabolism of other medications, including sedatives, antibiotics and anti-inflammatory drugs such as prednisone and Decadron. When combined with St. John’s Wort, these drugs can be less effective. On the other hand, narcotics such as codeine, Vicodin and oxycodone can become more potent when taken with St. John’s Wort. This can lead to sleepiness, lethargy and dizziness.

• Valerian – This herb has mild sedative effects. If your dentist prescribes drugs for anxiety or painkillers containing codeine, the effects of both together are greatly accentuated. This can lead to severe sleepiness, lethargy and dizziness that can last into the next day.

• Calcium and magnesium – When these supplements are combined with certain antibiotics, they can decrease the antibiotics being properly absorbed. This can compromise your ability to fight off infection.

As a periodontal specialist, I find that most cases of dry mouth are due to factors that can be easily controlled with simple changes. If you have delayed or avoided dental care, call 828-274-9440 to request a consultation, or begin with a thorough examination in our Asheville periodontal office.

And, if you are experiencing signs of gum disease, please know this disease will only worsen without treatment. The sooner you have treatment, the less involvement your treatment will likely be.

We offer the latest techniques, technology, and skills while always making patient comfort a top priority. If dental fear or anxiety are concerns, please make us aware of this when you call or at your initial appointment. In addition to our standard comfort features, we offer Oral and I.V. sedation (“twilight sleep”).