Low-power laser as an adjunct therapy in the postoperative period of clinical crown lengthening in the aesthetic area for the correction of gummy smile 2 of 4
prevents the apical migration of the tissue to the Cemento-Enamel Junction (CEJ) [8].
Moreover, this condition results in short anterior teeth with excessive gingival expo-
sure, indicating Clinical Crown Lengthening (CCL) surgery to correct GS [9]. Thus, the
surgery aims to establish an appropriate relationship in the position of the gingival
margin and the increase in clinical crown height of the teeth, restoring functional and
aesthetic balance, being one of the therapeutic approaches frequently used in clinical
practice [10, 11]. Conversely, the surgical removal of gingival tissue is carried out
using techniques such as gingivectomy and/or gingivoplasty, with or without bone
resection, indicated for correcting GS and re-establishing the space of the supra-
crestal tissues [12].
Subsequently, after the surgery, it is necessary to choose the most suitable su-
turing option that facilitates the joining of surgical edges and faster healing. Among
the various suturing options, vertical mattress and/or inverted and simple inter-
rupted sutures are described in the literature with good clinical results [8, 13]. In this
context, it is essential for the dentist and the patient to focus on the healing process
in the immediate postoperative period [14]. The repair process begins immediately
after the injury, even before the onset of inflammation, and ultimately results in the
complete repair and replacement of dead or injured cells with the formation of
healthy new cells [15].
It is important to highlight that there is an adjunct therapy to the post-surgical
tissue repair process, which is laser therapy. This therapy promotes high collagen
production and improves the remodeling of connective tissues, with results appear-
ing after 3 weeks [16, 17]. Furthermore, Moreira [18] highlighted in his studies var-
ious indications of lasers in dentistry, including periodontal abscess and access sur-
gery for scaling, root canal decontamination, endodontic abscess, prosthesis and mu-
cosal decontamination, dental surface decontamination, caries lesions, pericoronitis,
oral herpes, oral candidiasis, oral mucositis, halitosis, necrosis, and osteonecrosis in
the post-surgical context.
Low-power laser therapy has been extensively applied in the postoperative pe-
riod of periodontal surgeries, specifically for pain control. Thus, it acts on the surface
of the injured area, and its efficacy depends on the irradiated dose, the type of lesion,
and the patient's response regarding absorption. After irradiation, there is stimula-
tion of microcirculation and release of histamine, leading to improved plasma drain-
age and reduced edema. Additionally, the laser accelerates the process of mitosis,
resulting in better tissue repair and healing [19]. The development of numerous
types of lasers and various wavelengths has enabled their use in diverse treatments
[20]. Therefore, the main therapeutic effects include anti-inflammatory and analge-
sic action, infection prevention, and acceleration of the initial phases of healing in
biological tissues [21, 22].
Thus, this paper aimed to report a clinical case of the use of Low-Power Laser
as an adjunct therapy in the postoperative period of CCL surgery.
2. Case Report
A 22-year-old female patient visited the Dental Clinic of INTA University Center
– UNINTA, complaining about the appearance of her smile, which she considered un-
attractive due to the short size of her teeth and gum exposure when smiling, giving
her a childish look. After anamnesis and general clinical examination, the patient was
found to be systemically healthy. A simplified periodontal examination revealed no
gingival bleeding, biofilm, or calculus deposits. The photographic protocol showed a
broad and high smile, normal lip position, and excessive gingival exposure when
smiling (Figures 1A to 1D).
During the intraoral examination, teeth with short, quadrangular clinical
crowns and rounded, misaligned gingival margins were observed, with excessive
volume particularly in the region of the upper incisors. Sulcular probing identified a
gingival phenotype from intermediate to thick, leading to a diagnosis of Gummy