Gingivectomy Procedure for Removing Excess Gum Tissue

Anatomy of the Gingiva and Understanding Gingivectomy

The gingiva, commonly termed the gum, forms part of the periodontium—the specialised apparatus that anchors and protects the teeth within the alveolar bone. Anatomically, healthy gingiva is divided into the free or marginal gingiva, which encircles the tooth neck like a collar; the attached gingiva, which is firmly bound to the underlying periosteum and alveolar bone; and the interdental papillae, which fill the embrasure spaces between adjacent teeth. The shallow crevice between the free gingiva and the tooth surface is the gingival sulcus, which normally measures between one and three millimetres in health.

A gingivectomy is a periodontal surgical procedure designed to excise excess, overgrown, or diseased gingival tissue, thereby eliminating pathological pockets and establishing an anatomically harmonious gingival margin. This differs subtly from a gingivoplasty, which involves the reshaping and physiological contouring of the remaining healthy tissue to recreate natural scalloping, knife-edged margins, and interdental sluiceways. When executing a gingivectomy, surgeons must meticulously respect the supracrestal tissue attachment—historically known as the biological width—which consists of the junctional epithelium and connective tissue attachment coronal to the alveolar bone crest, typically spanning approximately two millimetres.

Violating this physiological boundary can precipitate chronic inflammation, unpredictable tissue recession, or alveolar bone resorption. Consequently, gingivectomy is indicated predominantly in clinical scenarios where excess soft tissue exists entirely coronal to the alveolar bone crest, allowing surgical excision without compromising the underlying osseous architecture or invading the supracrestal connective tissue attachment.

Aetiology and Indications for Excess Gum Tissue

Excessive gingival tissue, termed gingival overgrowth or gingival enlargement, arises from distinct physiological, inflammatory, and pharmacological mechanisms. The most prevalent cause is chronic plaque-induced gingivitis, wherein persistent bacterial biofilm provokes a vascular and cellular inflammatory response, leading to soft tissue oedema, hyperaemia, and cellular proliferation. In South Asian populations, this inflammatory burden is frequently exacerbated by local irritants such as the habit of chewing betel quid, gutka, or areca nut, which introduce mechanical abrasions, chemical irritants, and dense particulate matter that accelerate localized tissue dysregulation and fibrous hyperplastic responses.

Drug-induced gingival overgrowth (DIGO) represents another major clinical entity. This condition is triggered by three primary classes of systemic medications: calcium channel blockers (such as amlodipine and nifedipine, widely prescribed for hypertension), anticonvulsants (predominantly phenytoin), and immunosuppressants (notably ciclosporin, used following organ transplantation). These pharmacological agents disrupt cellular calcium metabolism in gingival fibroblasts, leading to decreased extracellular collagen breakdown, increased synthesis of extracellular matrix, and subsequent massive tissue enlargement. Orthodontic appliances can similarly induce mechanical irritation and impede plaque removal, fostering hyperplastic gingival responses.

Non-inflammatory and anatomical indications also exist. Altered passive eruption occurs when the gingival complex fails to recede apically to the level of the cementoenamel junction during dental development, leaving excessive soft tissue covering the clinical crowns of the teeth. Rarely, hereditary gingival fibromatosis—a benign, non-haemorrhagic, genetically determined condition—causes progressive, dense, and generalized enlargement of the gingival tissues, sometimes completely covering the occlusal surfaces of the dentition and hindering normal mastication and speech.

Clinical Presentation and Functional Implications

Gingival overgrowth manifests with diverse clinical presentations depending on whether the primary underlying mechanism is inflammatory or fibrous. Inflammatory enlargement typically appears bright red or purplish, soft, oedematous, and friable, bleeding readily upon minor provocation such as tooth brushing or clinical probing. In contrast, drug-induced or fibrotic overgrowth is often pale pink, dense, leathery, and nodular, exhibiting a stippled surface that may bleed minimally unless secondary inflammatory biofilm has supervened over the enlarged contours.

Functionally, overgrown gingiva creates deep pseudopockets—false periodontal pockets formed by coronal expansion of the gingival margin rather than apical migration of the epithelial attachment or loss of alveolar bone. These pseudopockets establish stagnant anaerobic niches that shelter pathogenic biofilm, making standard oral hygiene virtually impossible for the patient. As a result, patients frequently experience progressive halitosis, recurrent localized infections, persistent dull throbbing pain, and spontaneous haemorrhage during eating or speech.

Extensive tissue overgrowth can also compromise occlusion and masticatory efficiency by interposing fibrous tissue between the occlusal tables of opposing teeth. Aesthetically, the excessive display of gingival tissue coronal to the teeth leads to an apparent 'short tooth' appearance and excessive gingival display, often termed a gummy smile. This aesthetic disharmony can cause profound psychological distress, social inhibition, and impaired self-esteem in affected individuals.

Diagnostic Assessment and Differential Diagnosis

A comprehensive diagnostic evaluation begins with meticulous periodontal probing to chart pocket depths, assess bleeding on probing (BOP), and identify the exact relationship between the gingival margin, the cementoenamel junction (CEJ), and the base of the gingival sulcus. Transgingival probing, also known as bone sounding, is performed under local anaesthesia to measure the distance from the gingival margin to the alveolar bone crest. This step confirms whether the enlargement consists entirely of soft tissue pseudopockets or if true periodontal attachment loss and osseous defects are present, which would dictate an alternative flap procedure rather than a simple gingivectomy.

Radiographic evaluation using periapical radiographs, panoramic orthopantomograms (OPGs), or low-dose cone-beam computed tomography (CBCT) is mandatory to assess the underlying alveolar bone topography, rule out intrabony defects, and confirm root anatomy. A comprehensive medical history is essential to identify causative pharmacotherapy, systemic conditions such as leukaemia, uncontrolled diabetes mellitus, or hormonal surges associated with pregnancy and puberty, all of which alter gingival tissue turnover and vascularity.

Differential diagnosis must exclude neoplastic and granulomatous conditions that mimic benign overgrowth. These include peripheral giant cell granuloma, pyogenic granuloma, peripheral ossifying fibroma, leukemic gingival infiltration, and oral squamous cell carcinoma. In South Asian clinical practice, mucosal lesions linked to habitual use of khaini, mawa, or gutka must be carefully evaluated to distinguish benign hyperplastic tissue from malignant transformation. Any atypical, unilateral, rapidly expanding, or ulcerated lesion warrants incisional biopsy and histopathological analysis prior to definitive surgical excision.

Classification and Staging of Gingival Overgrowth

To standardize surgical planning and monitor treatment outcomes, clinicians employ established grading indices to classify the extent and severity of gingival enlargement. One widely adopted system is the Bokenkamp classification for drug-induced gingival overgrowth, which grades severity based on the anatomical coverage of the clinical tooth crown. Grade 0 denotes normal gingiva without overgrowth. Grade 1 corresponds to mild enlargement confined to the interdental papillae, extending no further than the cervical third of the crown.

Grade 2 enlargement involves moderate tissue expansion where the hypertrophic papillae and marginal gingiva cover up to the middle third of the anatomical crown. Grade 3 represents severe overgrowth, with dense tissue extending across more than two-thirds of the clinical crown, frequently encroaching upon the incisal edges or occlusal surfaces and causing functional masticatory interference. In addition to vertical extent, the condition is categorized by anatomical distribution as either localized (affecting single teeth or specific sextants) or generalized (involving the entire dentition).

Clinicians also classify tissue composition into predominantly inflammatory, predominantly fibrotic, or mixed. Inflammatory tissue is characterized by high vascularity, extensive inflammatory infiltrate, and minimal collagen cross-linking. Fibrotic tissue exhibits marked collagenous bundles, decreased cellularity, and low vascular density. Classifying tissue accurately guides the choice of surgical technique, as highly vascular inflammatory tissue requires meticulous haemostatic control, whereas dense fibrotic tissue demands precise sharp dissection and subsequent recontouring.

Surgical Modalities: Scalpel, Electrosurgery, and Laser

Gingivectomy can be executed via multiple surgical modalities, each possessing distinct physical mechanisms, benefits, and clinical limitations. The conventional scalpel technique, utilizing specialized periodontal knives such as Kirkland (for facial and lingual surfaces) and Orban knives (for interdental areas) alongside standard surgical blades (No. 15 or 15C), remains the gold standard in terms of precision and wound healing predictability. Scalpel excision does not generate thermal damage to adjacent tissues or underlying bone, resulting in minimal collateral necrosis and predictable histological healing, though it requires meticulous mechanical haemostasis.

Electrosurgery utilizes high-frequency alternating electric currents passed through a fine wire electrode to cut tissue and simultaneously coagulate microvasculature. While electrosurgery provides an essentially bloodless operative field and rapid contouring capability, it generates significant lateral heat. If the active electrode contacts root surfaces, periosteum, or alveolar bone, it can induce severe thermal necrosis, delayed wound healing, and irreversible osseous resorption. Consequently, electrosurgery is contraindicated in close proximity to alveolar bone and in patients with unshielded cardiac pacemakers.

Surgical lasers—including Diode, Nd:YAG, Carbon Dioxide (CO2), and Erbium-doped lasers (Er:YAG and Er,Cr:YSGG)—have gained widespread popularity. Lasers offer excellent intraoperative haemostasis, seal lymphatic vessels, reduce postoperative oedema, and sterilize the surgical wound bed. Erbium lasers, operating at wavelengths highly absorbed by water and hydroxyapatite, permit precise soft tissue ablation with minimal lateral thermal damage (often under 50 micrometres), allowing safe usage near bone. However, laser systems require specialized safety protocols, protective eyewear, and are associated with substantially higher procedural costs.

Step-by-Step Surgical Procedure

The gingivectomy procedure commences with profound local anaesthesia achieved via infiltration or regional nerve blocks using a vasoconstrictor-containing local anaesthetic (such as 2% lidocaine or 4% articaine with 1:100,000 adrenaline) to optimize pain control and provide initial surgical haemostasis. Following anaesthetic verification, the surgeon uses a Crane-Kaplan pocket marker or a standard periodontal probe to identify and mark the true base of each pseudopocket. The marker's straight beak is inserted to the base of the pocket, while the angled beak is pressed against the outer gingiva, creating small bleeding points (punctate bleeding) that delineate the pocket bottom.

These bleeding points form a visible guide for the primary incision. The surgeon initiates an external bevel incision using a Kirkland knife or No. 15 blade, angled at 45 degrees to the long axis of the tooth, positioned slightly apical to the bleeding points. This bevelled angle is critical; it ensures that the resulting postoperative gingival margin finishes in an aesthetically natural, knife-edged architecture rather than a blunt shelf. The incision is carried continuously across the operative site, completely freeing the marginal tissue.

Interdental incisions are completed with an Orban knife to sever remaining interproximal attachments. The excised collar of hypertrophic tissue is carefully elevated and removed using curettes. The exposed root surfaces undergo thorough scaling and root planing to eliminate calculus, endotoxins, and residual biofilm. Finally, a rotary diamond bur, surgical blade, or laser is used to perform a gingivoplasty, creating physiological interdental sluiceways and festooning the gingiva. A periodontal dressing (such as Coe-Pak) may be applied over the raw wound surface to protect it during initial healing, although dressings are increasingly omitted when using laser-assisted techniques.

Gingivectomy Procedure Recovery and Healing Timeline

Understanding the gingivectomy procedure recovery timeline is crucial for managing expectations and maintaining wound integrity. Because a gingivectomy leaves an open, denuded connective tissue bed that heals by secondary intention, the physiological recovery proceeds through distinct, overlapping biological phases. During the initial 24 hours, a protective fibrin clot forms over the exposed wound bed. Within 12 to 24 hours, epithelial cells from the wound margins begin active migration across the granulation tissue at a rate of approximately 0.5 millimetres per day.

By post-operative day seven to ten, surface epithelisation is largely complete, forming a delicate, thin mucosal layer that appears pale or yellowish-white, which patients occasionally mistake for infection. By day fourteen, the mature stratified squamous epithelium has re-established its protective barrier, though the underlying connective tissue continues to remodel. Complete biological maturation and reorganization of collagen bundles within the lamina propria require anywhere from five to twelve weeks, during which the gingiva regains its normal pink colour, firm consistency, and stippled texture.

Post-operative care protocols must balance plaque suppression with tissue protection. Mechanical tooth brushing and flossing over the surgical site must be avoided for the first week to prevent mechanical disruption of the migrating epithelial front. Instead, patients are prescribed an antiseptic chlorhexidine gluconate mouthwash (0.12% to 0.2%) used twice daily for ten to fourteen days. In resource-constrained settings or where chlorhexidine is inaccessible, warm saline rinses (half a teaspoon of table salt in a glass of warm water) initiated 24 hours post-surgery provide an effective, non-cytotoxic alternative to reduce bacterial counts and soothe inflamed tissues.

Postoperative Complications and Their Management

While gingivectomy is a routine and safe surgical intervention, postoperative complications can arise. Primary or secondary haemorrhage is the most immediate concern. Mild, minor oozing during the first 12 to 24 hours is normal and generally resolves with direct pressure applied using a sterile, damp gauze pad or a moistened black tea bag (the tannic acid promoting localized platelet aggregation and vasoconstriction). Persistent, active bleeding requires clinical evaluation to identify the source, application of topical haemostatic agents (such as oxidized cellulose or gelatin sponges), or placement of direct sutures.

Root dentine hypersensitivity is another common sequela resulting from the sudden exposure of cervical root surfaces to thermal, chemical, and tactile stimuli. This can be mitigated through the in-office application of desensitizing agents, fluoride varnishes, or dentine-bonding sealants, alongside home use of potassium nitrate or arginine-based dentifrices. Postoperative infection is uncommon due to the robust vascularity of the oral mucosa, but when present, it requires professional irrigation with sterile saline, removal of any necrotic debris, and, if accompanied by systemic signs, targeted systemic antimicrobial therapy.

The most challenging long-term complication is the recurrence or rebound of gingival enlargement. In drug-induced gingival overgrowth, surgical excision is purely symptomatic; without altering the offending systemic medication, tissue recurrence occurs in a substantial proportion of patients. Dentists must collaborate with the patient's prescribing physician or cardiologist to explore substituting the medication (for instance, replacing amlodipine with an angiotensin-converting enzyme inhibitor or angiotensin II receptor blocker) whenever clinically safe.

Red Flags: When to Seek Urgent Clinical Attention

Although the vast majority of patients complete their gingivectomy procedure recovery uneventfully, certain clinical manifestations indicate serious complications requiring immediate professional intervention. Patients must be educated on these red flags prior to discharge. Copious, continuous, bright red bleeding from the surgical site that does not abate after thirty minutes of continuous direct pressure constitutes an acute haemorrhagic emergency and demands urgent clinical haemostasis.

Signs of spreading odontogenic or soft tissue infection warrant emergency assessment. These include rapidly expanding facial, submandibular, or cervical swelling; persistent pyrexia (fever exceeding 38°C or 100.4°F); difficulty swallowing (dysphagia); or restricted mouth opening (trismus). The presence of purulent discharge or pus oozing spontaneously from the wound bed, especially when paired with a foul taste and escalating throbbing pain that is unresponsive to prescribed analgesics, points to established secondary wound infection.

Patients should also seek prompt evaluation if extensive, greyish-black sloughing occurs along the surgical margins, accompanied by sharp, radiating bone pain, which may indicate localized alveolar osteonecrosis or extensive thermal collateral damage. Early identification and management of these red flag symptoms prevent progression to deep fascial space infections, systemic bacteremia, or permanent periodontal tissue defects.

Evidence and further reading

The management of gingival enlargement and the biological parameters governing gingivectomy are well documented across international periodontal literature. Major scientific bodies, including the European Federation of Periodontology (EFP), the American Dental Association (ADA), and the British Society of Periodontology and Implant Dentistry (BSP), emphasize that thorough Phase I non-surgical periodontal therapy (scaling, root surface debridement, and rigorous oral hygiene education) must precede any surgical resection of gingival tissues.

Systematic reviews published in the *Journal of Clinical Periodontology* and the *Cochrane Database of Systematic Reviews* demonstrate that while laser and electrosurgical techniques provide superior intraoperative haemostasis compared to conventional scalpel gingivectomy, long-term clinical attachment levels and recurrence rates show no statistically significant difference between modalities. Furthermore, the global consensus from the World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions underscores the imperative of maintaining the supracrestal attached tissues during any excisional procedure to ensure biological stability and prevent alveolar crestal bone resorption.