{"id":3703,"date":"2026-02-27T20:41:11","date_gmt":"2026-02-27T20:41:11","guid":{"rendered":"https:\/\/www.bestdentalhospitals.com\/blog\/guided-tissue-regeneration-definition-uses-and-clinical-overview\/"},"modified":"2026-02-27T20:41:11","modified_gmt":"2026-02-27T20:41:11","slug":"guided-tissue-regeneration-definition-uses-and-clinical-overview","status":"publish","type":"post","link":"https:\/\/www.bestdentalhospitals.com\/blog\/guided-tissue-regeneration-definition-uses-and-clinical-overview\/","title":{"rendered":"guided tissue regeneration: Definition, Uses, and Clinical Overview"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Overview of guided tissue regeneration(What it is)<\/h2>\n\n\n\n<p>guided tissue regeneration is a periodontal (gum) surgical technique designed to help lost supporting tissues around teeth regrow in a controlled way.<br\/>\nIt uses a barrier membrane to guide healing so that slower-growing tissues have time and space to form.<br\/>\nIt is most commonly used in periodontal therapy for specific bone defects caused by gum disease.<br\/>\nIt may also be discussed alongside related regenerative procedures used around dental implants.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why guided tissue regeneration used (Purpose \/ benefits)<\/h2>\n\n\n\n<p>Periodontal disease can damage the tissues that hold teeth in place: the gum attachment, periodontal ligament, and the supporting bone. Once these structures are lost, the body\u2019s natural healing often favors fast-growing soft tissue (like gum epithelium) filling the space first. When that happens, the area may heal, but it may not rebuild the deeper support that helps stabilize a tooth.<\/p>\n\n\n\n<p>guided tissue regeneration aims to solve this \u201chealing competition\u201d problem. The core idea is to <strong>separate<\/strong> the wound area so that cells associated with tooth support have a better chance to repopulate the defect. The barrier membrane is intended to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Exclude unwanted soft tissue ingrowth<\/strong> into the bony defect during early healing.<\/li>\n<li><strong>Protect and stabilize the blood clot<\/strong>, which is important for organized healing.<\/li>\n<li><strong>Maintain space<\/strong> where bone and periodontal attachment can form.<\/li>\n<li><strong>Support more structured tissue repair<\/strong> compared with healing that collapses or fills in too quickly with soft tissue.<\/li>\n<\/ul>\n\n\n\n<p>For patients, the practical goal is often to <strong>improve support around a tooth affected by periodontal bone loss<\/strong> in selected situations. For students and early-career clinicians, guided tissue regeneration is best understood as a technique that combines <strong>surgical access + debridement + wound stabilization + barrier function<\/strong>, often paired with graft materials depending on the case.<\/p>\n\n\n\n<p>Outcomes and predictability vary. They depend on defect shape, patient factors, clinician technique, and the chosen materials.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Indications (When dentists use it)<\/h2>\n\n\n\n<p>guided tissue regeneration is typically considered in situations such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Vertical (intrabony) periodontal defects<\/strong>, where bone loss forms a \u201ccrater\u201d or wall-like defect next to a tooth  <\/li>\n<li><strong>Class II furcation involvement<\/strong> (bone loss in the space between roots) in certain teeth and defect patterns  <\/li>\n<li><strong>Localized deep periodontal pockets<\/strong> associated with defect anatomy that may be favorable for regeneration  <\/li>\n<li><strong>Sites where space maintenance is possible<\/strong>, helping a stable clot and regenerative tissue formation  <\/li>\n<li><strong>When combined approaches are planned<\/strong>, such as bone grafting plus a membrane (varies by clinician and case)  <\/li>\n<li><strong>Selected recession\/attachment problems linked to periodontal defects<\/strong>, when regenerative goals are part of the plan (case-dependent)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Contraindications \/ when it\u2019s NOT ideal<\/h2>\n\n\n\n<p>guided tissue regeneration may be less suitable or less predictable when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Oral hygiene is not stable<\/strong>, because plaque accumulation can disrupt wound healing  <\/li>\n<li><strong>Uncontrolled systemic conditions<\/strong> may impair healing (risk considerations vary by clinician and case)  <\/li>\n<li><strong>Heavy smoking or nicotine exposure<\/strong>, which can reduce healing predictability (varies by patient and exposure)  <\/li>\n<li><strong>Defects with unfavorable anatomy<\/strong>, such as wide, shallow defects with limited bony walls for support  <\/li>\n<li><strong>Insufficient soft tissue coverage<\/strong> or difficulty achieving tension-free closure over the membrane  <\/li>\n<li><strong>High tooth mobility or unstable occlusion<\/strong>, when mechanical forces may disrupt early healing  <\/li>\n<li><strong>Active infection not yet controlled<\/strong> at the intended surgical site  <\/li>\n<li><strong>Inability to return for follow-up<\/strong>, since monitoring membrane exposure and healing is important<\/li>\n<\/ul>\n\n\n\n<p>These are not absolute rules. In real practice, clinicians weigh risks, benefits, anatomy, and patient-specific factors.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How it works (Material \/ properties)<\/h2>\n\n\n\n<p>Some material-property terms commonly used for dental fillings (like \u201cflow,\u201d \u201cviscosity,\u201d and \u201cfiller content\u201d) do <strong>not<\/strong> directly apply to guided tissue regeneration, because guided tissue regeneration is not a resin filling material. Instead, guided tissue regeneration relies on <strong>barrier membranes<\/strong> (and sometimes grafts) with different relevant properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Flow and viscosity<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Not directly applicable<\/strong> to guided tissue regeneration in the way it is for flowable composites.  <\/li>\n<li>The closest relevant concept is <strong>handling behavior<\/strong>: how easily a membrane can be trimmed, adapted to the defect, and stabilized without folding or collapsing.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Filler content<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Not applicable<\/strong> as a primary concept for membranes.  <\/li>\n<li>A closer parallel is <strong>membrane composition and structure<\/strong>, such as collagen-based resorbable membranes or nonresorbable polymer membranes. Composition influences tissue response, handling, and how long the barrier function lasts.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Strength and wear resistance<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cWear resistance\u201d (a chewing-surface concern) is <strong>not relevant<\/strong> for guided tissue regeneration membranes.  <\/li>\n<li>The relevant mechanical properties are:<\/li>\n<li><strong>Tensile strength and tear resistance<\/strong>, affecting how the membrane withstands suturing or fixation<\/li>\n<li><strong>Space-making ability<\/strong> (stiffness or reinforcement), affecting whether the membrane collapses into the defect<\/li>\n<li><strong>Dimensional stability<\/strong>, affecting barrier function during early healing<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Other key properties that matter in guided tissue regeneration<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Biocompatibility<\/strong>: the material should be tolerated by tissues.  <\/li>\n<li><strong>Cell occlusiveness and porosity<\/strong>: designed to block certain cell types while supporting healing.  <\/li>\n<li><strong>Resorption profile (for resorbable membranes)<\/strong>: how long the membrane maintains barrier function before it breaks down (varies by material and manufacturer).  <\/li>\n<li><strong>Risk of exposure<\/strong>: membrane exposure to the oral environment can affect outcomes and may require additional management (varies by clinician and case).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">guided tissue regeneration Procedure overview (How it\u2019s applied)<\/h2>\n\n\n\n<p>guided tissue regeneration is a surgical procedure, so the workflow differs from placing a dental filling. The sequence below uses the requested step headings and explains how they map (or do not map) to guided tissue regeneration.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\n<p><strong>Isolation<\/strong><br\/>\n   In restorative dentistry, isolation means keeping the tooth dry. In guided tissue regeneration, \u201cisolation\u201d more closely refers to <strong>controlling the surgical field<\/strong>: managing saliva and blood, gaining access with a gum flap, and maintaining a clean operating area.<\/p>\n<\/li>\n<li>\n<p><strong>Etch\/bond<\/strong><br\/>\n<strong>Not applicable<\/strong> in the traditional sense. guided tissue regeneration does not typically use acid etching and bonding agents to attach a resin to enamel\/dentin.<br\/>\n   The closest parallel is <strong>root surface preparation and debridement<\/strong> (removing plaque, calculus, and diseased tissue) to create conditions favorable for healing.<\/p>\n<\/li>\n<li>\n<p><strong>Place<\/strong><br\/>\n   This is the key guided tissue regeneration step: the clinician <strong>places the regenerative components<\/strong>, which may include:<\/p>\n<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A <strong>membrane<\/strong> positioned to cover the defect and act as a barrier  <\/li>\n<li>A <strong>bone graft material<\/strong> placed within the defect when indicated (varies by clinician and case)  <\/li>\n<li><strong>Fixation<\/strong> methods (tacks, sutures, or other stabilization) depending on the system and defect anatomy<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\n<p><strong>Cure<\/strong><br\/>\n<strong>Not applicable<\/strong> as light-curing. Membranes and grafts do not \u201ccure\u201d like resin.<br\/>\n   Instead, healing depends on <strong>blood clot stabilization, tissue integration, and time<\/strong>. If a biologic adjunct is used, its setting or handling depends on the product (varies by material and manufacturer).<\/p>\n<\/li>\n<li>\n<p><strong>Finish\/polish<\/strong><br\/>\n<strong>Not applicable<\/strong>. There is no polishing step as with fillings.<br\/>\n   The closest parallel is <strong>final flap positioning and closure<\/strong>: trimming excess membrane if needed, achieving tension-free closure when possible, and placing sutures to protect the site.<\/p>\n<\/li>\n<\/ol>\n\n\n\n<p>Across techniques, clinicians aim for: thorough cleaning of the defect, stable wound conditions, protected healing, and careful post-operative monitoring.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Types \/ variations of guided tissue regeneration<\/h2>\n\n\n\n<p>guided tissue regeneration varies mainly by <strong>membrane type<\/strong>, <strong>whether grafting is used<\/strong>, and <strong>adjunctive biologics or stabilization methods<\/strong>. (Terms like \u201clow vs high filler,\u201d \u201cbulk-fill,\u201d and \u201cinjectable composites\u201d are categories for resin filling materials and are <strong>not<\/strong> types of guided tissue regeneration.)<\/p>\n\n\n\n<p>Common guided tissue regeneration variations include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\n<p><strong>Resorbable membrane guided tissue regeneration<\/strong><br\/>\n  Often collagen-based. These membranes gradually break down and may reduce the need for a second surgery to remove the barrier. Resorption time and handling vary by material and manufacturer.<\/p>\n<\/li>\n<li>\n<p><strong>Nonresorbable membrane guided tissue regeneration<\/strong><br\/>\n  Often expanded or dense PTFE-based membranes, sometimes with reinforcement. These may require a later procedure for removal, depending on the system and clinical plan.<\/p>\n<\/li>\n<li>\n<p><strong>Reinforced membranes for space maintenance<\/strong><br\/>\n  Some membranes include titanium reinforcement or have greater stiffness to help prevent collapse into the defect. This can be relevant in larger defects where maintaining space is challenging.<\/p>\n<\/li>\n<li>\n<p><strong>guided tissue regeneration with bone grafting<\/strong><br\/>\n  A graft may be used to support the membrane, help maintain space, and provide a scaffold. Graft sources and properties vary by clinician preference, material selection, and case.<\/p>\n<\/li>\n<li>\n<p><strong>guided tissue regeneration with biologic adjuncts<\/strong><br\/>\n  Some approaches combine membranes with biologics intended to support regenerative healing. Indications and protocols vary by product and clinician.<\/p>\n<\/li>\n<li>\n<p><strong>Technique variations in flap design and closure<\/strong><br\/>\n  Papilla preservation techniques, minimally invasive approaches, and different suture strategies are used to improve wound stability and coverage. Selection varies by clinician and case.<\/p>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pros and cons<\/h2>\n\n\n\n<p>Pros:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Can be a <strong>tissue-preserving approach<\/strong> aimed at rebuilding support rather than removing additional bone  <\/li>\n<li>Targets the <strong>biologic challenge of competing tissues<\/strong> during healing by using a barrier concept  <\/li>\n<li>May be used in <strong>specific defect types<\/strong> where conventional cleaning alone may not address the underlying structural loss  <\/li>\n<li>Often integrates well with <strong>grafting and stabilization methods<\/strong> when needed (case-dependent)  <\/li>\n<li>Encourages <strong>structured healing conditions<\/strong>, especially clot protection and space maintenance  <\/li>\n<li>Provides a framework for teaching periodontal regeneration concepts (cell exclusion, wound stability)<\/li>\n<\/ul>\n\n\n\n<p>Cons:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Technique-sensitive<\/strong>: outcomes depend heavily on defect anatomy, membrane selection, and wound management  <\/li>\n<li><strong>Membrane exposure risk<\/strong> can complicate healing and may change management needs  <\/li>\n<li>May require <strong>additional visits<\/strong> and close follow-up during healing  <\/li>\n<li>Some systems or approaches may involve <strong>higher material complexity<\/strong> compared with non-regenerative surgery  <\/li>\n<li><strong>Not ideal for every defect<\/strong>; some bone loss patterns are less favorable for predictable regeneration  <\/li>\n<li>Healing can be affected by <strong>patient-specific factors<\/strong> (hygiene, smoking, systemic health, bite forces)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Aftercare &amp; longevity<\/h2>\n\n\n\n<p>Healing and longevity after guided tissue regeneration depend on how well the site stabilizes and how well the regenerated area is maintained over time. In general, factors that can influence outcomes include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Oral hygiene and plaque control<\/strong>: bacterial biofilm can disrupt periodontal healing and long-term stability.  <\/li>\n<li><strong>Bite forces and occlusal loading<\/strong>: excessive forces may stress the healing area; bruxism (clenching\/grinding) can be relevant.  <\/li>\n<li><strong>Regular professional maintenance<\/strong>: periodic periodontal evaluation helps identify inflammation or pocket recurrence early.  <\/li>\n<li><strong>Defect anatomy and initial disease severity<\/strong>: deeper, well-contained defects may behave differently than wide, shallow ones.  <\/li>\n<li><strong>Material choice and handling<\/strong>: membrane type, resorption profile, and stabilization method can influence early healing (varies by material and manufacturer).  <\/li>\n<li><strong>Post-surgical tissue response<\/strong>: swelling, inflammation control, and whether the membrane stays covered can affect predictability.<\/li>\n<\/ul>\n\n\n\n<p>Because guided tissue regeneration is part of periodontal therapy, \u201clongevity\u201d is often discussed as <strong>maintenance of improved attachment\/support<\/strong> rather than a fixed lifespan like a filling. Long-term stability varies by clinician and case.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alternatives \/ comparisons<\/h2>\n\n\n\n<p>guided tissue regeneration is a <strong>regenerative periodontal surgical approach<\/strong>, so it is not directly comparable to restorative materials used for fillings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">guided tissue regeneration vs flowable vs packable composite<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Flowable and packable composites<\/strong> are resin-based filling materials used to restore tooth structure (for example, cavities or small defects).  <\/li>\n<li>guided tissue regeneration is used to address <strong>supporting tissue loss<\/strong> (bone\/attachment) around teeth.  <\/li>\n<li>They treat different problems, in different locations, with different success measures.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">guided tissue regeneration vs glass ionomer<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Glass ionomer<\/strong> is a tooth-colored restorative material and sometimes a liner\/base; it may release fluoride depending on the product.  <\/li>\n<li>It does not serve as a barrier membrane for periodontal regeneration.  <\/li>\n<li>The comparison is mainly educational: one restores tooth surface; the other aims to regenerate periodontal support.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">guided tissue regeneration vs compomer<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Compomers<\/strong> are restorative materials (resin-modified, with some fluoride release characteristics depending on the material).  <\/li>\n<li>They are not used as periodontal barrier membranes and are not alternatives to guided tissue regeneration for bone\/attachment loss.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Practical clinical alternatives to guided tissue regeneration (periodontal context)<\/h3>\n\n\n\n<p>Depending on goals and defect characteristics, clinicians may consider:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Open flap debridement (access surgery)<\/strong> without a barrier membrane  <\/li>\n<li><strong>Resective periodontal surgery<\/strong>, reshaping bone and soft tissue to reduce pockets in certain patterns of disease  <\/li>\n<li><strong>Bone grafting without a membrane<\/strong> in selected scenarios (approach varies by clinician and case)  <\/li>\n<li><strong>Biologic agents without a membrane<\/strong>, depending on indication and technique  <\/li>\n<li><strong>Supportive periodontal therapy (maintenance)<\/strong> as the ongoing foundation after active treatment<\/li>\n<\/ul>\n\n\n\n<p>Which option is appropriate depends on diagnosis, anatomy, and patient factors.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Common questions (FAQ) of guided tissue regeneration<\/h2>\n\n\n\n<p><strong>Q: Is guided tissue regeneration the same as a bone graft?<\/strong><br\/>\nNo. guided tissue regeneration refers to the <strong>use of a barrier membrane concept<\/strong> to guide healing. A bone graft may be used at the same time to help maintain space or provide a scaffold, but it is a separate component.<\/p>\n\n\n\n<p><strong>Q: Is guided tissue regeneration painful?<\/strong><br\/>\nDiscomfort varies by clinician and case and depends on the extent of surgery and individual sensitivity. Many patients report soreness similar to other gum surgeries during early healing. Pain control planning is individualized by the treating clinician.<\/p>\n\n\n\n<p><strong>Q: How long does guided tissue regeneration take to heal?<\/strong><br\/>\nInitial soft-tissue healing often occurs over weeks, while deeper remodeling can continue longer. The exact timeline depends on the defect, materials used, and how stable the wound remains. Your clinic may describe healing in phases rather than a single endpoint.<\/p>\n\n\n\n<p><strong>Q: How long do the results last?<\/strong><br\/>\nLongevity is usually tied to <strong>periodontal stability over time<\/strong>, not a fixed \u201cexpiration date.\u201d Long-term results depend on disease control, hygiene, maintenance visits, bite forces, and risk factors like bruxism or smoking. Outcomes vary by clinician and case.<\/p>\n\n\n\n<p><strong>Q: Is guided tissue regeneration safe?<\/strong><br\/>\nIn general, guided tissue regeneration uses materials designed for biocompatibility and has a long history in periodontal therapy. Like any surgical procedure, it has risks such as swelling, infection, or membrane exposure, and these risks vary by technique and patient factors. Safety considerations are evaluated case-by-case.<\/p>\n\n\n\n<p><strong>Q: What is a membrane, and why is it needed?<\/strong><br\/>\nA membrane is a thin barrier placed over a periodontal defect. Its purpose is to <strong>block fast-growing soft tissue<\/strong> from filling the space too quickly, helping create a protected area where deeper supporting tissues have a chance to form. Membranes can be resorbable or nonresorbable.<\/p>\n\n\n\n<p><strong>Q: Can guided tissue regeneration be done around dental implants?<\/strong><br\/>\nThe membrane concept is used around implants too, but it is often termed <strong>guided bone regeneration (GBR)<\/strong> when the primary goal is bone volume for implants. The principles overlap, but the target tissues and clinical endpoints differ. Terminology and technique depend on the situation.<\/p>\n\n\n\n<p><strong>Q: Why does defect shape matter so much?<\/strong><br\/>\nRegeneration is more predictable when the defect provides <strong>natural walls and containment<\/strong>, which help stabilize the clot and support the membrane. Wide, shallow defects can be harder to stabilize and may be less favorable. This is one reason case selection is emphasized in teaching.<\/p>\n\n\n\n<p><strong>Q: Does smoking affect guided tissue regeneration outcomes?<\/strong><br\/>\nNicotine exposure is commonly discussed as a factor that can reduce healing predictability in periodontal procedures. The degree of impact can vary based on amount, duration, and individual biology. Clinicians typically factor this into risk assessment and treatment planning.<\/p>\n\n\n\n<p><strong>Q: What makes guided tissue regeneration different from \u201cjust cleaning the teeth\u201d?<\/strong><br\/>\nRoutine cleaning removes plaque and calculus from accessible surfaces. guided tissue regeneration involves <strong>surgical access<\/strong> to deep defects, thorough debridement, and placement of a membrane (and sometimes grafting) to guide healing. It is intended for specific periodontal defect situations rather than general preventive care.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>guided tissue regeneration is a periodontal (gum) surgical technique designed to help lost supporting tissues around teeth regrow in a controlled way. It uses a barrier membrane to guide healing so that slower-growing tissues have time and space to form. It is most commonly used in periodontal therapy for specific bone defects caused by gum disease. It may also be discussed alongside related regenerative procedures used around dental implants.<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-3703","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>guided tissue regeneration: Definition, Uses, and Clinical Overview - Best Dental Hospitals<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bestdentalhospitals.com\/blog\/guided-tissue-regeneration-definition-uses-and-clinical-overview\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"guided tissue regeneration: Definition, Uses, and Clinical Overview - Best Dental Hospitals\" \/>\n<meta property=\"og:description\" content=\"guided tissue regeneration is a periodontal (gum) surgical technique designed to help lost supporting tissues around teeth regrow in a controlled way. It uses a barrier membrane to guide healing so that slower-growing tissues have time and space to form. It is most commonly used in periodontal therapy for specific bone defects caused by gum disease. 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