|Year : 2019 | Volume
| Issue : 1 | Page : 13-20
|Periodontal regeneration with enamel matrix derivative in the management of generalized aggressive periodontitis: A case report with 11-year follow-up and literature review
Dimitra Trikka, Spyridon Vassilopoulos
Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Greece
|Date of Submission||18-Mar-2018|
|Date of Acceptance||20-Nov-2018|
|Date of Web Publication||14-Feb-2019|
Dr. Dimitra Trikka
6 Str Kapodistriou, Argos, Argolida, 21200
Source of Support: None, Conflict of Interest: None
| Abstract|| |
Objectives: Aggressive periodontitis (AgP) represents an uncommon but rapidly advanced inflammatory process, which involves the destruction of periodontal tissues. This study aimed to report a case of generalized AgP (GAgP), where the treatment approach consists of the utilization of the full-mouth disinfection protocol (FMDP) in conjunction with flap curettage and regenerative appliance of enamel matrix derivatives (EMDs). The associated literature was also reviewed.
Materials and Methods: A 19-year-old female patient was diagnosed with GAgP. The treatment was initiated with FMDP and administration of antibiotics. Afterward, open flap debridement was performed, and EMD was selected as the regenerative material for the reconstruction of the periodontal defects. Over an 11-year period and during all the phases of the treatment, the outcomes were regularly evaluated with clinical measurements and radiographic controls.
Results: The 11-year results demonstrated no recurrence of disease, and the patient's periodontal health exhibited evident improvement. Overall, the pocket depths presented satisfactory reduction while the clinical attachment loss (CAL) was improved. Both our limited experience and available literature data revealed that the use of EMD in AgP treatment contributes to bone fill of the intrabony defects as well as regeneration of the destructed periodontal apparatus.
Conclusions: Although the outcomes of this treatment approach have not been widely evaluated, it seems that the use of EMD may be an effective means of periodontal regeneration in patients with GAgP. Additional prospective studies with adequate number of GAgP patients are essential to thoroughly assess the effectiveness of this approach.
Keywords: Aggressive periodontitis, enamel matrix derivative, periodontal regeneration, treatment of periodontitis
|How to cite this article:|
Trikka D, Vassilopoulos S. Periodontal regeneration with enamel matrix derivative in the management of generalized aggressive periodontitis: A case report with 11-year follow-up and literature review. J Int Soc Prevent Communit Dent 2019;9:13-20
|How to cite this URL:|
Trikka D, Vassilopoulos S. Periodontal regeneration with enamel matrix derivative in the management of generalized aggressive periodontitis: A case report with 11-year follow-up and literature review. J Int Soc Prevent Communit Dent [serial online] 2019 [cited 2022 Jul 6];9:13-20. Available from: https://www.jispcd.org/text.asp?2019/9/1/13/252257
| Introduction|| |
Aggressive periodontitis (AgP) is a quite rare but severe inflammatory process which involves the destruction of periodontal tissues with rapid fashion; it is also characterized by early-onset and familial aggregation. From a historical aspect, this specific type of periodontal disease is known since 1923 when Gottlieb described it as “diffuse atrophy of the alveolar bone.” The term “AgP” replaced the already used one of “early-onset periodontitis” in the last Classification Workshop of the American Academy of Periodontology (1999).
There are specific clinical and laboratory features which discriminate AgP into localized and generalized form. Generalized AgP (GAgP) commonly appears under the age of 30 years; however, older patients may also be affected. Patients with GAgP present at least three permanent teeth (other than first molars and incisors) with generalized interproximal attachment loss. The whole inflammatory process is distinguished by exacerbation episodes interrupted by quiescence periods lasting for variable length of time (weeks to months or years). Moreover, the immunologic response to the infecting agents, in terms of antibody production, is weak.,, However, in 2018, the AAP and the European Federation of Periodontology established a new classification for periodontal disease according to the current knowledge of pathophysiology. Thus, three forms of periodontitis can be identified: necrotizing periodontitis, periodontitis as a manifestation of systemic disease, and periodontitis. The last one type contains the previously known disease as chronic or AgP, which now grouped under the single category of periodontitis. In this article, the previous classification method of American Academy of Periodontology (1999) was used for comprehension reasons.,
The treatment of the AgP, which is a mainstream use of full-mouth disinfection protocol (FMDP) combined with systematic antibiotic administration, although has led to improved clinical outcomes, should not be limited to the arrest of the disease progression, but also to include the regeneration of the destructed periodontal tissues., The application of enamel matrix derivatives (EMDs) has been proved effective in enhancement of osteoblast and periodontal ligament cell proliferation as well as in acceleration of new bone formation.,, Kaner et al. reported satisfactory clinical radiographic and microbiologic outcomes when minimally invasive access flaps were combined with the use of EMD in a case of localized AgP.
This article aimed to report a case of GAgP where the treatment plan included the utilization of the FMDP followed by open flap surgery in combination with EMD application. Furthermore, the English literature in PubMed was searched and reviewed regarding periodontal regeneration with EMD only for the patients diagnosed with AgP.
| Materials and Methods|| |
In 1999, a 19-year-old female patient who presented in a private dental practice complained about the increased mobility of her teeth during the past months together with the progressive widening of interdental diastema in both upper and lower front teeth [Figure 1]a, [Figure 1]b, [Figure 1]c, [Figure 1]d, [Figure 1]e. She was systematic disease-free, and her medical history did not include medications, allergies, and alcohol or cigarette use. The patient stated that she received supragingival scaling every 6 months from her general dentist. Furthermore, the patient cited that her father had suffered from multiple teeth losses and severe periodontal problems despite his age (51 years old). Patient consent was obtained for the publication.
The initial periodontal examination demonstrated bleeding on probing (BOP) >50%, plaque index 30%, and periodontal attachment loss (PAL) and pocket depth (PD) exceeding 6 mm in more than three teeth other from central incisors and first molars. The initial clinical measurements are presented in [Table 1]. They were carried out by the same clinician at six sites per tooth (mesiofacial, facial, distofacial, mesiolingual, lingual, and distolingual). The long-cone paralleling technique was used for the periapical radiographic examination, while a panoramic radiograph was also screened. The collected data support the diagnosis of GAgP.
Immobilization of all maxillary and mandibular teeth was utilized to improve patient comfort and function before the initiation of periodontal treatment. The conservative treatment was performed according to the FMDP proposed by Quirynen et al. All teeth were subjected to scaling and root planing both with manual instruments (Gracey curettes, Hu-Friedy®, Chicago, EUA) and piezomagnetic ultrasonic scaler within 48 h under local anesthesia. Amoxicillin (500 mg/qid) in combination with metronidazole (500 mg/tid) was prescribed per os for 7 days. The patient was instructed for proper oral hygiene by brushing her teeth according to the modified Bass technique and rinsing a chlorhexidine solution (0.12% twice a day for 2 weeks).
The first reevaluation was carried out 8 weeks later. Despite the improvement of some clinical indexes, the periodontal examination also revealed residual intrabony defects deeper than 6 mm localized in the following teeth: 11, 15–16, 25–26, 35–36, 31–42, and 45–46, which implied surgical access leading to six surgical interventions as well as periodontal regeneration procedures with the use of EMD (Emdogain®, Biora AB, Malmo, Sweden) [Figure 2]a, [Figure 2]b, [Figure 2]c, [Figure 2]d, [Figure 2]e, [Figure 2]f, [Figure 2]g, [Figure 2]h, [Figure 2]i. Specifically, the sulcular incisions by 15c scalpel and fine elevator were utilized to raise mucoperiosteal flaps in various sites. Then, meticulous degranulation of intrabony defects and scaling of the root surfaces were applied. The surgical field was rinsed with saline, and afterward, the exposed roots were carefully dried with cotton swabs to secure the application of 24% ethylenediaminetetraacetic acid (PrefGel®, Institut Straumann) for 2 min. The root surfaces were rinsed again with saline allowing EMD placement. The flap was tightly closed with Laurell–Gottlow suturing technique (5.0 silk). The sutures were removed 10 days postoperatively.
|Figure 2: (a-g) Open flap surgery with the application of enamel matrix derivatives|
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Oral hygiene measures were restricted to local rinses with chlorhexidine 0.2% twice a day for 6 weeks. After suture removal, tooth brushing was implemented using a soft brush, and the 3rd postoperative week, interdental cleaning was recommended. The first postoperative evaluation underwent at 6 months, which was followed by a strict maintenance protocol.
| Discussion|| |
Eleven years later, no recurrence of periodontal diseases was noted [Figure 3]a, [Figure 3]b, [Figure 3]c. The improvement of periodontal health was indicated by a reduction of PD and gain of clinical attachment loss (CAL) [Table 2] when compared to the baseline measurements [Table 1]. Particularly, the mean PD was 5.62 ± 2.91 mm at the baseline, whereas the mean PD 11 years later was 3.57 ± 0.95 mm. Similarly, the mean CAL was estimated to be 6.63 ± 4.01 mm at the baseline, but after 11 years, it was reduced to 5.53 ± 3.03 mm. The periapical radiographic examination exhibited stability and possible regeneration of the affected intrabony defects on single and multirooted teeth [Figure 4]a, [Figure 4]b, [Figure 4]c, [Figure 4]d, [Figure 4]e, [Figure 4]f, [Figure 4]g,[Figure 4]h, [Figure 4]i, [Figure 4]j, [Figure 4]k, [Figure 4]l.
|Figure 3: (a-c) Eleven-year follow-up: Absence of periodontal inflammation, minor plaque deposes, and pronounce recession|
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|Figure 4: (a-l) Periapical radiographies at the baseline (a, c, e, g, i, and k) and after 11 years. (b, d, f, h, j and l) Evidenced a significant bony fill following the treatment|
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In general, the pattern and the aims of AgP treatment are not considerably different from those of chronic periodontitis. However, both the severity and the rapid process of bone loss affecting the young patients with AgP commonly require conformity with a more aggressive treatment approach.
The current data have drawn up the conclusion that there is no superior benefit of FMDP over the conventional scaling and root planing in the treatment of chronic periodontitis. Yet, FMDP has been incorporated that in the treatment of AgP is an effective approach. In fact, several authors documented clinical improvement in PD, PAL, and BOP., Mongardini et al. compared the effectiveness between FMDP and conventional treatment in 16 patients with AgP (referred as early-onset periodontitis) and ascertained small but significant differences in periodontal indexes over an 8-month period. Furthermore, Quirynen et al. provided additional evidence which indicated a significantly greater reduction of spirochetes and motile organisms Porphyromonas gingivalis after FMDP in comparison to conventional approaches. Furthermore, randomized placebo-controlled studies reported that the clinical benefits of FMDP in the context of AgP treatment may be significantly reinforced by the adjunctive use of systemic antibiotic regimen containing amoxicillin and metronidazole. The meta-analysis of Keestra et al. also provided extra evidence about the advantageous role of systematic administration of amoxicillin and metronidazole in nonsurgical treatment of AgP. Several studies evaluated the clinical effect of different antibiotic protocols., One-year randomized trial on a patient with generalized CP demonstrated that the use of 400 or 250 mg metronidazole in conjunction with 500 mg amoxicillin (tid) for 14 days has statistically significant superior clinical outcomes compared to no antibiotic utilization. Furthermore, it is mentioned that the use of those antibiotic for 7 days has no added benefits. However, the current systematic review and meta-analysis reveals that there are no clinical benefits between different doses or duration of amoxicillin plus metronidazole at 3 months posttreatment, and it is concluded that 500 mg amoxicillin plus 500 or 400 mg metronidazole for 7 days would be appropriate.
Although the nonsurgical treatment may be proved adequate for the management and control of AgP, the tenacious existence of pathologic periodontal pockets (>6 mm) leads to the necessity of surgical approaches. Hence, surgical therapy has shown favorable clinical outcomes in studies containing patients with AgP with advanced residual pockets. Likewise, the conservative periodontal treatment in our patient failed to reduce optimally the PD in all of the affected teeth, and therefore, access flap surgery was required. Jiao et al. performed nonsurgical therapy in 1004 patients with GAgP, with 6-week (203 patients), 3-month (310 patients), 6-month (193 patients), 1-year (205 patients), 3-year (70 patients), and >5-year (23 patients) follow-up period. The authors demonstrated the limitation of nonsurgical treatment on teeth with advanced periodontal destruction, especially for molars with furcation involvement and/or angular bone defect. The surgical procedures involved not only the removal of granulation tissue but also periodontal regeneration with the use of EMD.
The EMD is both well-established and documented methods to promote regeneration of cementum, periodontal ligament, and alveolar bone. The main point of its use entails the creation of a regenerative environment that reproduces the biological conditions occurring in the embryonic development of the periodontal tissues. One significant feature of EMD is the prevention of epithelial downgrowth along the root surface after the surgical procedure. This can be achieved by the formation of a mechanical obstacle such as that of barrier membranes in guided tissue regeneration (GTR) procedures. EMD fosters the proliferation of PDL cells, cementoblasts, and osteoblasts by allowing the reestablishment of normal periodontal architecture.,, The ease of its use in clinical practice relies on its possible application in multiple contiguous defects, in one operation and within short interventional time.
Armitage et al. advocated that chronic periodontitis and AgP should share the same treatment goals, regardless of their differences in etiologic/contributing factor and aggressiveness. A systematic review focused on the evaluation of various regenerative techniques which had been used in patients with AgP. This review inducted that the application of EMD in those patients offered comparable clinical improvements in comparison to the use of EMD in patients with chronic periodontitis.
The meta-analysis of Esposito et al. isolated for analysis nine studies which evaluated the comparison outcomes between EMD and control or placebo groups at 1 year postoperatively. Various clinical parameters were examined such as tooth loss, PAL, esthetics, complications, PAL gain <2 mm, PD, gingival recessions (REC), and radiographic bone level. Statistically significant superiority for EMD versus control/placebo groups was found, regarding PAL (mean difference of 1.08 mm, 95% confidence interval [CI]: 0.61–1.55) and PD (mean difference of 0.88 mm, 95% CI: 0.44–1.31). By contrast, there was no significant difference between the compared groups in the assessment of REC and radiographic bone level. Another meta-analysis by Matarasso et al. concluded that the combination of EMD and bone grafting materials has greater clinical profits concerning CAL gain and PD decrease, compared to the isolated use of EMD. In addition, when EMD was applied alone as a regenerative technique, the increase of REC was higher than the one combined with bone substitutes. However, the authors did not provide information of the comparative assessment of the radiographic bone level despite the approach.
A major number of studies have evaluated the regenerative therapy of intrabony defects with EMD in patients with chronic periodontitis. A prospective case series study assesses the long-term stability after surgical treatment of intrabony defect with either EMD or barrier membrane (plus or without filler). Specifically, 35 intrabony defects were treated with EMD, 3 defects with EMD with combination of fillers, 1 patient was treated with bioabsorbable L-lactic-D-lactic-glycolic acid-trimethylene carbonate membrane, and 1 other with titanium-reinforced expanded polytetrafluorethylene membrane. The mean observation period lasted 63.8 months. The authors revealed that 41% of the infrabony defects gained ≥4 mm vertical CAL, while 24% gained <2 mm in 5-year follow-up. They concluded that the vertical CAL of the infrabony defects may had not been changed, and it was correlated with the number of supportive therapy visits as well.
Another prospective 2-year study assesses the use of EMD in 42 intrabony defects. The mean value of bone loss at the baseline was 47.5% ± 13.3%, and at the 1st year postoperative, the bone fill was 25.6% ± 12.9%, and at the 2nd year postoperative, it was 36.2 ± 14.6%. Apart from that, the authors yielded that there were statistically significant gains in CAL and reductions in PD during the observation period. This study revealed that there was no significant association between the type of intrabony defects and the gain of CAL, but they attribute that to the small sample size.
Losada et al. conducted a 12-month randomized controlled clinical trial on 42 patients with uncontained infrabony defects, which were treated with the combination of EMD and biphasic calcium phosphate or EMD alone, and the authors demonstrated that there is no significant different on bone fill, CAL, and decrease of PD. A correlation between the angle, the number of the residual bony walls, and the gain of CAL was revealed. Particularly, they illustrated a probability of 2.57 times higher CAL gain ≥3 mm in intrabony defect with angulation <24.75° than in wider angles and of 0.55 times reduction of CAL gain ≥3 mm in 2-wall defects compared with 1 wall.
There are limited studies which investigate the effect of EMD on the subgingival microbiome. The current study analyzes the changes in periodontal microbiome in class II buccal furcation defects after treatment with beta-tricalcium-phosphate/hydroxyapatite graft (βTCP/HA), EMD + βTCP/HA, or EMD alone. Thirty-nine lesions were examined and 422 species were revealed, with an average of 119 ± 35 species-level operational taxonomic units. All three groups achieved changing the subgingival microbiome, with reductions of the red-complex species and increases in health compatible species.. However, the EMD groups came out with more long-term reductions in higher number of species, that is, the βTCP/HA group. Specifically, Filifactor alocis educed for a short time, but after 6 months, it was increased again in βTCP/HA group. Furthermore, in EMD groups, Selenomonas spp., which have been associated with periodontal disease, especially AgP and sites with progressing attachment loss, were greater reduced compared with the βTCP/HA group.
In case of AgP treatment, EMD may be used in conjunction with deproteinized bone xenograft (DBX) alternatively to GTR. In fact, Artzi et al. did not report significant differences between the combination of EMD and DBX and GTR technique containing DBX with a resorbable membrane over a 1-year period. Both techniques resulted in similar PD reduction (GTR-treated sites 61.1% vs. EMD-treated sites 61.6%) and CAL gain (GTR-treated sites 54.5% vs. EMD-treated sites 59.3%). However, the authors did not mention the analysis of data related to radiographic documentation of hard-tissue regeneration/reestablishment of periodontal ligament. The regenerative application of EMD may be successfully combined with bioactive glass, even though the short- and long-term results were proved beneficial secondary to the isolated use of EMD, as in our case report., All the isolated data from the available studies, which involved EMD application in the management of AgP, are summarized in [Table 3].
|Table 3: Review of studies containing AgP patients treated with enamel matrix derivatives|
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For the AgP patients who receive the appropriate periodontal treatment and follow a strict maintenance protocol reduce their possibility of tooth loss. This finding (mean tooth loss per patient for periodontal disease 0.9 ± 2.0) derived from the retrospective study of Diaz-Faes et al. which contained 656 teeth and 3168 clinical sites with mean follow-up of 10.9 ± 2 years. Over this long-term period, the mean reduction of PD was 1 ± 0.8 mm as well as CAL exhibited the mean increase of 0.6 ± 0.9 mm. Those results are in an agreement with those of another study, which is concluded that the progression of AgP is correlated with the supportive therapy protocol. The researchers examined 2379 teeth and 7.7% of those had been lost before reexamination, which had revealed the annual tooth loss rate of 0.14 teeth/patient/year. Nevertheless, 42.7% of patients had no further tooth loss. In contrast, other authors did not confirm the aforementioned findings and evidenced that annual tooth loss rates are higher despite the patients' compliance with the supportive periodontal treatment.
| Conclusions|| |
The long-term results of this case report of GAgP support the effectiveness of FMDP followed by EMD use as a regenerative adjunct. The clinical and radiographic measurements demonstrated improvement over an 11-year period. Since there are a few publications reporting this certain approach in patients with GAgP, randomized control studies are required to adequately document its possible benefits in comparison to other treatments.
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Conflicts of interest
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[Figure 1], [Figure 2], [Figure 3], [Figure 4]
[Table 1], [Table 2], [Table 3]
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