Case report
Synergistic Approach to Diastema Closure using Frenectomy and Restorative Procedures: A Case Report
Correspondence Address :
Dr. Deepak Moses Ravindran,
No. 1, Sri Ramachandra Nagar, Porur, Chennai 600116, India.
E-mail: deepak_perio@sriramachandra.edu.in
Midline diastema, the space between maxillary central incisors, is a common aesthetic concern with multifactorial aetiology. A 24-year-old female presented with a midline diastema caused by a high papillary frenum, contributing to multifactorial aesthetic disharmony. This created aesthetic concerns and anterior asymmetry. Digital diagnostics, including intraoral scanning and virtual smile design, supported accurate assessment and planning. Treatment involved a diode laser frenectomy to remove the high frenal attachment and restore gingival zenith harmony. This was followed by diastema closure using a digitally guided injectable resin composite technique. A 3D-printed mock-up and customised injection template helped achieve precise morphology, controlled resin placement, and strong aesthetic results while preserving tooth structure. Postoperative review at three months showed smooth healing, high patient satisfaction, and stable functional and aesthetic outcomes with no relapse. This case highlights the combined benefits of laser-assisted surgery and digitally guided restorative methods. The approach offers a minimally invasive, predictable, and refined solution for treating diastema linked to high frenal attachment.
Composite resins, Dental aesthetics, Laser, Three dimensional printing
A 24-year-old female patient presented to the Department of Periodontology with a chief complaint of spacing between the maxillary central incisors for the past 10 years. Clinical examination revealed a distinct midline diastema associated with a papillary frenal attachment classified by Mirko P et al., (1974) (1). Additionally, gingival assessment was performed through clinical examination, evaluating the gingival zenith position, contour, and symmetry relative to adjacent teeth. An altered gingival zenith of the maxillary left central incisor was noted, disrupting anterior dental symmetry and compromising the overall aesthetic balance (Table/Fig 1)a.
Comprehensive preoperative documentation was undertaken, including standardised intraoral photographs and digital impressions obtained via intraoral scanning (iTero™) (Table/Fig 1)b. Based on clinical examination, the case was diagnosed as maxillary midline diastema measured 2 mm associated with a papillary type labial frenal attachment (Placek classification), along with altered gingival zenith of the maxillary left central incisor contributing to anterior aesthetic disharmony.
These diagnostic records facilitated virtual treatment planning which encompassed three sequential interventions: laser-assisted frenectomy, correction of the gingival zenith, and definitive diastema closure using a minimally invasive injectable composite resin technique.
A digital smile design was executed using BlueSky Bio® software to simulate the anticipated restorative outcome (Table/Fig 1)c. The finalised virtual design was converted into a three-dimensional printed diagnostic mock-up (Table/Fig 1)d and presented to the patient for aesthetic evaluation. With the patient’s consent to the proposed contours and proportions, the treatment plan was commenced.
Under local anaesthesia, a diode laser (445 nm wavelength, 2.0 W, continuous mode; Sirona®) was utilised to excise the high frenum and concurrently recontour the gingival zenith in relation to tooth 21 (Table/Fig 2)a-d.
Laser parameters were optimised to achieve a precise incision, effective haemostasis and minimal collateral tissue injury. Postoperative instructions were given. The patient was advised to maintain a soft diet and avoid hot and spicy foods for 24-48 hours. Gentle oral hygiene was recommended, avoiding trauma to the surgical site and to avoid excessive lip movement. Chlorhexidine mouth rinse (0.12%) was prescribed twice daily for one week and analgesics were prescribed immediately after the procedure and for the subsequent two days. Clinical review after one week revealed uneventful healing characterised by healthy granulation tissue formation (Table/Fig 3)a.
A custom-fabricated splint template was prepared from the finalised 3D mock-up model. Precision access channels for composite injection were created along the incisal edges using fine chamfer diamond burs, ensuring optimal angulation for material placement. The template was trial-fitted intraorally to verify adaptation and marginal stability (Table/Fig 3)b.
Shade selection was performed under natural daylight conditions using the VITA® Classical Shade Guide, with A2 identified as the optimal match. After achieving complete isolation of the operative field, the enamel surface was etched with 37% phosphoric acid gel (D-tech XT Etch, India) for 15 seconds, followed by thorough rinsing and gentle air-drying. A universal adhesive (G-Premio Bond, GC Corporation, Tokyo, Japan) was applied, gently air-thinned, and light-cured for 20 seconds. The silicone template was then seated, and a flowable composite resin in shade A2 (G-ænial Universal Injectable, GC Corporation, Tokyo, Japan) was injected through the incisal access ports, allowing controlled material flow from the cervical to the incisal region between the tooth and the template. Once the space was completely filled, the material was light-cured with an LED curing unit for 40 seconds (Table/Fig 4)a.
After removal of the template, excess resin was carefully eliminated using a dental probe, and the procedure was sequentially repeated for next tooth. Finishing was accomplished with a fine-grit diamond bur (Mani Inc., Japan), followed by interproximal contouring with fine and extra-fine abrasive strips (Shofu Inc., Kyoto, Japan). The labial surfaces were refined using Sof-Lex Extra Thin contouring and polishing discs (3M ESPE, St.Paul, MN, USA) and final polishing was performed with rubber polishers in conjunction with a diamond paste (Prisma Gloss, Dentsply DeTrey GmbH,Germany) to optimise surface smoothness and minimise future plaque accumulation and discoloration (Table/Fig 4)b.
The patient reported a high level of satisfaction with the immediate postoperative aesthetic outcome. A secondary polishing session was undertaken 48-hours later to enhance surface luster. At the three months follow-up, the restoration demonstrated excellent shade stability, marginal integrity and harmonious integration with the adjacent dentition with no clinical signs of gingival inflammation or diastema relapse (Table/Fig 4)c.
Midline diastema, the space between maxillary central incisors, is a common aesthetic concern with multifactorial aetiology. While it may be transient during mixed dentition, persistence in adulthood is often linked to tooth-size discrepancies, abnormal habits, supernumerary teeth, periodontal disease, or high frenal attachment (2). This interference contributes to diastema formation and relapse after closure; therefore, frenectomy prior to space closure is essential for long-term stability (3). Modern aesthetic dentistry emphasises conservative approaches that preserve tooth structure. Direct anterior restorations are technique-sensitive, requiring composites that balance durability, aesthetics, and handling (4). For diastema closure, resin composites offer a conservative, cost-effective, and aesthetically versatile solution without aggressive tooth preparation. The injectable resin composite technique integrates the benefits of direct and indirect restorations. This case report presents the management of a midline diastema associated with high papillary frenum using a combined surgical (laser frenectomy) and restorative (digitally guided injectable composite) approach.
The preoperative midline diastema was reduced to 0 mm postoperatively, achieving 100% closure. At the three-month follow-up, periodontal conditions remained stable with no signs of inflammation, bleeding on probing, or recession, and the composite restoration showed no clinically detectable wear, marginal deterioration, or discoloration. The combined frenectomy and injectable composite technique proved to be a cost-effective alternative to more extensive orthodontic or prosthetic, treatments such as veneers or crowns.
In the present case a diode laser was selected for frenectomy because it offers better haemostasis, less postoperative discomfort, and minimal tissue damage compared to scalpel or electrosurgery (5). These advantages allowed early restorative intervention without compromising gingival health, and are consistent with reports of faster epithelialisation and reduced, postoperative pain (6),(7). This aligns with Sobouti F et al., (2024), who reported significantly less intraoperative bleeding, reduced postoperative pain, and faster healing with diode laser frenectomy, particularly at 445 nm, compared to scalpel techniques (5).
From a restorative standpoint, various modalities exist for diastema closure, ranging from orthodontic treatment to porcelain veneers and direct composite bonding (8),(9). Orthodontics provides tooth movement without altering tooth structure, but is time-consuming, costly, and may not address the underlying frenal pathology (9). Porcelain veneers provide excellent aesthetics but require greater tooth preparation and cost, reducing conservativeness (8). Direct resin composites offer a cost-effective, reversible, minimally invasive alternative, though freehand bonding is technique-sensitive and operator-dependent (8),(9). In contrast, the injectable composite technique used in this case allowed accurate transfer of a digital wax-up, ensured predictable morphology, greater efficiency, and reduced operator fatigue (10),(11). A transparent index enables controlled resin placement, minimising voids and shrinkage, while maintaining strength and handling for seamless integration with adjacent teeth, as seen at three-month follow-up (10),(11).
The integration of digital smile design and 3D-printed mock-ups enhanced communication, consent, and restorative precision, while digital workflows improved predictability and satisfaction in anterior aesthetic cases. The “synergistic approach” in this case refers to the combination of frenectomy and restorative treatment.
In a case report by Santi MR et al., (2020), digital smile design guided an integrated approach involving gingivoplasty and direct composite restorations, resulting in improved dental and gingival harmony and an aesthetically pleasing outcome with high patient satisfaction (12).
The main limitation of this case is the short follow-up period; although no relapse was noted at three months, long-term stability should be assessed at one year. In addition, while this protocol is reproducible, its implementation requires access to digital planning tools, 3D printing, and laser technology, which may not be available in all clinical settings.
The successful outcome supports combining laser frenectomy with digitally guided injectable composite as a predictable, minimally invasive, and highly aesthetic solution for diastema with high papillary frenum. This approach harmonises surgical correction with precise restorative execution, offering a patient-centered treatment pathway that aligns with modern principles of minimally invasive dentistry (8),(10).
Laser-assisted frenectomy combined with digitally guided injectable composite restoration proved to be a predictable, minimally invasive approach for treating midline diastema associated with a high papillary frenum. The technique relieved mechanical tension and enabled precise control of morphology, contour, shade, and contacts. Digital planning and custom injection templates streamlined the workflow and enhanced predictability. Three-month follow-up showed stable aesthetic and functional outcomes, supporting a conservative, aesthetic treatment option consistent with minimally invasive dentistry.
Authors’ contribution: VR: Conceptualised the case report, digital workflow planning, performed the clinical procedure including laser frenectomy and restorative treatment, collected patient data, and drafted the manuscript; DMR: Conceptualised the case report, assisted in digital workflow planning, provided clinical guidance during treatment, supervised manuscript preparation, critically revised the content, and approved the final version for submission; DK: Contributed to discussion and clinical interpretation , aided in postoperative assessment; LA: Contributed to discussion and clinical interpretation, aided in postoperative assessment; SKB: Offered expert guidance on case management and manuscript structure, contributed to discussion and clinical interpretation, and approved the final draft.
DOI: 10.7860/JCDR/2026/87584.24409
Date of Submission: Jan 21, 2026
Date of Peer Review: Mar 16, 2026
Date of Acceptance: May 23, 2026
Date of Publishing: Sep 01, 2026
Author declaration:
• Financial or Other Competing Interests: None
• Was informed consent obtained from the subjects involved in the study? Yes
• For any images presented appropriate consent has been obtained from the subjects. Yes
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• Plagiarism X-checker: Mar 07, 2026
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ETYMOLOGY: Author Origin
EMENDATIONS: 6
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