What This Guide Covers
This guide explains how gum disease leads to jawbone loss and what you can do about it. It is written for adults who have been told they have periodontitis, those who suspect they might, and anyone who wants to understand the connection between gum health and bone health.
Periodontitis is a chronic infection of the tissues that surround and support your teeth. Unlike gingivitis (early gum disease that only inflames the gums), periodontitis destroys the bone and ligaments that anchor teeth in the jaw. [6] Left untreated, this bone loss eventually loosens teeth and can lead to tooth loss.
You will learn how bone loss happens at a biological level, how dentists detect and measure it, what treatments are available, and how to protect the bone you still have. If any terms are unfamiliar, each is defined in plain language the first time it appears.
How Periodontitis Destroys Jawbone
Periodontitis breaks down jawbone through a chain reaction that starts with bacteria and is carried out by your own immune system.
It Starts with Bacterial Biofilm
Your mouth contains hundreds of bacterial species. When plaque (a sticky film of bacteria) builds up along and below the gumline, it hardens into calculus (tarite). This creates a rough surface that shelters harmful bacteria in pockets between the gum and the tooth. [6]
These bacteria release toxins that irritate gum tissue. In response, your body launches an inflammatory defense. White blood cells rush to the area, and your immune system releases chemical signals called cytokines and enzymes called matrix metalloproteinases (MMPs). These chemicals are meant to fight infection, but they also dissolve the connective tissue and bone surrounding the tooth. [6]
This is a key point many patients find surprising. The bacteria start the process, but most of the actual tissue destruction comes from your own immune response. That is why people with overactive inflammatory responses, smokers, and those with poorly controlled diabetes often experience faster bone loss. [6]
Types of Bone Loss Around Teeth
Bone loss from periodontitis typically follows one of two patterns. Horizontal bone loss is a general, even lowering of the bone level across several teeth. Vertical (infrabony) bone loss creates a deeper pocket along one side of a specific tooth root. [6]
The pattern matters for treatment planning. Vertical defects often respond better to regenerative procedures like bone grafting because the surrounding bone walls can help support new tissue growth. Horizontal bone loss, which is more widespread, is generally harder to rebuild. [13]
According to the 2017 World Workshop classification system, periodontitis is graded (A, B, or C) partly based on how quickly bone loss is progressing relative to the amount of plaque present. Grade C indicates rapid progression and often requires more aggressive treatment. [4]
The Link Between Bone Loss and Overall Health
Periodontitis is not limited to the mouth. The chronic inflammation it creates has been associated with cardiovascular disease, poorly controlled diabetes, adverse pregnancy outcomes, and respiratory infections. [6] While research is still clarifying cause-and-effect relationships, there is strong evidence that controlling periodontal disease helps improve blood sugar levels in people with diabetes. [6]
Bone loss also affects the long-term success of dental restorations. Fixed dental prostheses (bridges and crowns) placed on teeth with reduced bone support have a higher risk of failure if the underlying periodontal disease is not controlled first. [2] This is why periodontists and restorative dentists often coordinate treatment plans.
How Dentists Detect and Measure Bone Loss
Bone loss is detected through a combination of clinical probing, X-rays, and in some cases advanced imaging.
Periodontal Probing
Your dentist or hygienist uses a thin, blunt instrument called a periodontal probe to measure the depth of the sulcus (the space between your gum and your tooth). In a healthy mouth, this space is typically 1 to 3 mm deep. Depths of 4 mm or more suggest the gum has detached from the tooth and bone loss may be present. [4]
Six measurements are taken around each tooth, three on the cheek side and three on the tongue side. The dentist also checks for bleeding on probing (BOP), which indicates active inflammation. Consistent BOP at a site is a strong indicator of disease activity. [4]
A general dentist or dental hygienist can perform periodontal probing as part of a routine exam. Research is also exploring the use of artificial intelligence to assist in diagnosing periodontal disease from clinical and radiographic data, though these tools are still being validated. [1]
Dental X-Rays and Imaging
Periapical and bitewing X-rays show the bone level around each tooth. The dentist compares the current bone level to where it should be (just below the enamel-cement junction, where the crown meets the root). Any gap between these landmarks suggests bone has been lost.
A full-mouth series of X-rays is typically needed for a thorough periodontal assessment. In complex cases, a cone-beam computed tomography (CBCT) scan provides a three-dimensional view that reveals defects hidden on flat X-rays. CBCT is especially useful before planning surgical or regenerative procedures. [11]
Staging and Grading Periodontitis
The 2017 classification system stages periodontitis from I (mild) to IV (severe with potential tooth loss) based on the amount of bone loss and clinical attachment loss. It also grades progression speed from A (slow) to C (rapid). [4]
Staging tells the dentist how much damage has already occurred. Grading predicts how fast the disease may advance if untreated. Together, these guide treatment decisions and help set realistic expectations for each patient's outcome. [4]
Treatment Options: Stopping and Reversing Bone Loss
Treatment ranges from deep cleaning to surgery, depending on how advanced the bone loss is.
Non-Surgical Treatment: Scaling and Root Planing
Scaling and root planing (SRP), sometimes called a deep cleaning, is the first line of treatment for most cases of periodontitis. The clinician uses hand instruments or ultrasonic tools to remove plaque and calculus from below the gumline. Root planing smooths rough spots on the root surface so gums can reattach more closely. [11]
SRP is typically done in two or more visits, with local anesthesia to keep you comfortable. Each appointment focuses on one section of the mouth. Most patients experience some soreness and sensitivity for a few days afterward.
A reevaluation appointment, usually four to six weeks after SRP, measures how the tissues have responded. Pocket depths that have not improved to 3 mm or less may need further treatment. In early to moderate cases, SRP alone can halt bone loss and stabilize the condition. [11]
Periodontal Surgery
When pockets remain deep after SRP, a periodontist may recommend surgical access. Flap surgery (also called pocket reduction surgery) involves lifting the gum tissue away from the bone, thoroughly cleaning the root surfaces, and repositioning the tissue at a lower level to reduce pocket depth. [11]
In cases with vertical bone defects, the periodontist may combine flap surgery with regenerative procedures. These include guided tissue regeneration (GTR), which uses a barrier membrane to direct bone and ligament cells into the defect, and bone grafts, which fill the defect with bone material from a donor source, a synthetic material, or the patient's own bone. [13]
A 2021 systematic review by Stavropoulou and colleagues in the Journal of Clinical Periodontology, which analyzed data from multiple randomized controlled trials, found that GTR produced significant improvements in clinical attachment levels and bone fill compared to flap surgery alone for infrabony defects (deep, narrow bone pockets around individual teeth). [13] However, results vary based on defect shape, patient health, and smoking status.
Ongoing Periodontal Maintenance
Periodontitis is a chronic condition. Even after successful treatment, regular maintenance visits are needed to prevent relapse. These visits typically occur every three to four months and include probing, X-rays as needed, and professional cleaning above and below the gumline. [11]
Studies show that patients who attend regular periodontal maintenance have significantly less tooth loss over time than those who skip appointments. [6] At home, daily brushing twice a day and flossing once a day remain the foundation of disease control. [12] Interdental brushes may be more effective than string floss for cleaning between teeth with bone loss, as the spaces tend to be wider. A systematic review by Salzer and colleagues found that interdental brushes removed more interproximal plaque than dental floss in patients with sufficient space between teeth. [14]
Replacing Teeth After Bone Loss
If teeth are lost due to periodontitis, dental implants are a common replacement option. However, implants require adequate bone volume for placement. Patients with significant bone loss may need bone grafting before or during implant surgery. [7]
The timing of implant placement after extraction depends on the amount of remaining bone and soft tissue. In some cases, implants can be placed immediately after extraction; in others, a waiting period of several months allows the bone graft to integrate first. [7] Soft tissue quality around the implant also matters. Adequate gum thickness, sometimes achieved through soft tissue augmentation, is associated with better long-term implant health. [5]
Patients with a history of periodontitis have a higher risk of developing peri-implantitis (inflammation and bone loss around an implant). Ongoing periodontal maintenance is equally important for implants as it is for natural teeth. [5]
Cost Factors for Periodontal Treatment
Costs for periodontal treatment vary widely based on the severity of bone loss and the procedures required.
Scaling and root planing typically costs $200 to $400 per quadrant (one-quarter of the mouth). A full mouth treatment therefore ranges from roughly $800 to $1,600. Periodontal surgery, including flap procedures and bone grafts, can range from $1,000 to $4,000 or more per surgical site. Guided tissue regeneration with membrane and graft material may add to that cost. Costs vary by location, provider, and case complexity.
Many dental insurance plans cover a portion of SRP and periodontal surgery when documented as medically necessary. Coverage for bone grafts and regenerative procedures is less consistent and may require preauthorization. Ask your insurance provider for a pre-treatment estimate before starting care.
Periodontal maintenance visits, typically billed differently from a standard cleaning, generally cost $150 to $300 per visit. Because these visits occur three to four times per year instead of two, the annual cost of maintenance is higher than standard preventive care. However, consistent maintenance reduces the risk of more expensive treatments later.
When to See a Periodontist
A periodontist is a dentist with additional years of training in treating gum disease, bone loss, and placing dental implants. Referral to a periodontist is typically appropriate in specific situations.
Your general dentist may refer you to the periodontics page to find a periodontist if you have moderate to severe periodontitis (Stage III or IV), rapidly progressing bone loss (Grade C), or pockets that did not respond to initial scaling and root planing. [4] Complex cases involving multiple teeth, furcation involvement (bone loss between the roots of multi-rooted teeth), or the need for regenerative surgery also benefit from specialist care. [8]
You should also consider seeing a periodontist if you have systemic conditions that complicate healing, such as uncontrolled diabetes or immune disorders. Smokers, who face faster progression and slower healing, may benefit from specialist management as well. [6]
A general dentist can manage mild periodontitis (Stage I or II) and provide ongoing maintenance. Research suggests that collaboration between general practitioners and periodontists, with clear treatment goals and shared follow-up, produces the best long-term outcomes. [8]
Find a Periodontist Near You
If you have been told you have bone loss or deep pockets, a periodontist can evaluate your condition and recommend the most appropriate treatment. Use our directory on the periodontics page to search for a board-eligible or board-certified periodontist in your area. You can filter by location, insurance accepted, and specific services like bone grafting or dental implants.
Search Periodontists in Your Area