Evaluation of Clinical Soft Tissue Parameters for Extramaxillary Zygomatic Implants and Conventional Implants in All-on-4 Hybrid Rehabilitations

Nobre, Miguel de Araújo; Maló, Paulo; Gonçalves, Inês O.

doi:10.1097/id.0000000000000253

Cited by 9 publications

(8 citation statements)

References 23 publications

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“…Nobre et al evaluated clinical soft tissue parameters for extramaxillary ZIs and the results failed to identify compelling evidence to conclude that any particular implant or feature affects the outcome of the treatment of patients with fully edentulous maxilla 29 . In this study, three periimplant mucositis and two periimplantitis were seen in five patients.…”

Section: Discussionmentioning

confidence: 61%

Clinical outcome of 302 zygomatic implants in 110 patients with a follow‐up between 6 months and 7 years

Göker

Grecchi

Fabbro

et al. 2020

Clin Implant Dent Rel Res

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Background: Zygomatic implant surgery is considered as a safe and successful alternative to the conventional implant surgery with bone grafts for patients with severe atrophic maxilla. Purpose: The aim of this retrospective clinical case series was to report clinical outcome of zygomatic implants with a follow-up between 6 months and 7 years. Materials and methods: A total of 110 patients with 302 zygomatic implants were included in this study. The intra and postoperative complications and survival rate of zygomatic implants were evaluated. Results: The study included 110 consecutively treated patients with an age range of 21 to 76 years (mean 57.35 years, SD 10.42). The overall zygomatic implant survival rate was 98.34%. There were five implant failures in four patients. One intraoperative and 17 postoperative complications developed in 18 patients. There were no dropouts and the median follow-up of the patients was 41.75 months (with a range of 6-89 months). Conclusions: According to the results, in cases of severely atrophic posterior maxilla, zygomatic implant surgery can be considered as an effective and safe alternative to conventional implants and bone grafting procedures.

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Section: Discussionmentioning

confidence: 61%

Clinical outcome of 302 zygomatic implants in 110 patients with a follow‐up between 6 months and 7 years

Göker

Grecchi

Fabbro

et al. 2020

Clin Implant Dent Rel Res

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“…This interaction provides innovative dental treatment for complete or partial edentulous individuals and can reestablish the masticatory function, retention and stability of the fixed restorations (1), with satisfactory results for the stomatognathic system (2,3). …”

Section: Introductionmentioning

confidence: 99%

Masticatory muscle activity evaluation by electromyography in subjects with zygomatic implants

Palinkas²,

Cm³

et al. 2017

Med Oral

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Background: Zygomatic implants are an alternative treatment in the rehabilitation of atrophic maxilla to promote stability in the stomatognathic system. The aim of this study was to compare the electromyographic (EMG) activity of masseter and temporalis muscles in controls and in individuals with complete implant-supported dentures anchored in the zygomatic bone. Material and Methods: Fifty-four volunteers of both genders (mean age 52.5 years) were selected and distributed into two groups: Individuals with zygomatic implant (ZIG; n=27) and fully dentate patients (CG; n=27). MyoSystem-BR1 was used to assess masseter and temporalis muscles EMG activity in different mandibular movements: protrusion, clenching, maximal voluntary contraction (MVC) with Parafilm M®, right and left laterality and chewing (peanuts and raisins). Data was processed, normalized (MVC) and analyzed using the SPSS 21.0. Student t-test (P ≤ 0.05) was used for group comparison. Results: The results were statistically significant (P ≤ 0.05) for protrusion, clenching, right and left laterality and raisin chewing. For the mandibular posture conditions, the ZIG obtained higher EMG activity patterns when compared to CG. For the masticatory performance during chewing of peanuts and raisins, the ZIG showed higher EMG mean values when compared to CG. Conclusions: The zygomatic implant promoted an active response of the muscle fibers (hyperactivity) during both mandibular posture and chewing conditions, probably due to the absence of periodontal receptors, which play a significant role for preparing a bolus for swallowing.

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“…Goiato et al [10] in a systematic review evaluating 25 clinical studies on implants inserted in the zygomatic bone for maxillary rehabilitation reported 97.86% of implant CSR at the 2-3 years follow-up time. Concerning the extra-maxillary surgical technique, 99% to 100% implant CSR were registered on the same follow-up time [18,21].…”

Section: Discussionmentioning

confidence: 99%

“…Modified plaque index (mPLI) recorded in an ordinal scale between 0 and 3 (0: no plaque visible; 1: plaque only visible after the insertion of the probe; 2: plaque visible with the naked eye; and 3: abundance of soft matter) [20]; • Modified bleeding index (mBI), recorded in an ordinal scale between 0 and 3 (0: no bleeding visible; 1: isolated bleeding spots visible; 2: bleeding forms a confluent red line on the margin; and 3: heavy or profuse bleeding) [20]; • Mucosal seal efficacy evaluation (MSEE) was assessed by inserting a 0.25 Ncm calibrated plastic periodontal probe (Hawe-Neos, Bioggio, Switzerland) in the sulcus of the zygomatic implant until a maximum depth of 4 mm and recorded as "0" if the probe stopped before 4 mm of depth or as "1" if the probe did not stop before 4 mm of depth [21]; • Zygomatic Implants Clinical Level (ZICL) was computed considering the MSEE, mPLI and mBI clinical indexes: 21 ZICL 1 (MSEE = 0; mPLI = 0; mBI = 0), ZICL2 (MSEE = 1; mPLI = 0; mBI = 0), ZICL3 (MSEE = 1; mPLI = 0; mBI = 1-3), ZICL4 (MSEE = 1; mPLI = 1-3; mBI = 0-3).…”

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confidence: 99%

Zygomatic Implants Placed in Immediate Function through Extra-Maxillary Surgical Technique and 45 to 60 Degrees Angulated Abutments for Full-Arch Rehabilitation of Extremely Atrophic Maxillae: Short-Term Outcome of a Retrospective Cohort

Lopes

Nobre

Ferro

et al. 2021

JCM

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The use of new devices for the rehabilitation of the severely atrophic maxillae needs validation. We aimed to report the short-term outcome of severely atrophic jaws rehabilitated with zygomatic implants with no implant head angulation placed extramaxillary in conjunction with standard implants. Forty-four patients were consecutively included with 77 zygomatic implants (31 abutments of 45 degrees and 46 abutments of 60 degrees) and 115 standard implants. Outcome measures were prosthetic survival, implant/abutment success, complications, modified plaque index (mPLI), modified bleeding index (mBI), mucosal seal efficacy evaluation (MSEE) >4 mm, and Zygomatic implants classification level (ZICL). Two patients (4.5%) were lost to follow-up. No prosthesis was lost; one patient lost one zygomatic implant; two angulated abutments of 60 degrees needed to be replaced in one patient due to an aesthetic complaint; rendering a cumulative success rate at 2-years of 95.3% and 95.9% using patient and implant/abutment as unit of analysis, respectively. Mechanical and biological complications occurred in 13 and six patients, respectively; all resolved. The median mPLI and mBI was 1; MSEE > 4 mm occurred in 17% and 21% of patients at 1- and 2-years, respectively; ZICL1 was registered in 80% of patients. The current protocol enabled good short-term outcomes.

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Evaluation of Clinical Soft Tissue Parameters for Extramaxillary Zygomatic Implants and Conventional Implants in All-on-4 Hybrid Rehabilitations

Cited by 9 publications

References 23 publications

Clinical outcome of 302 zygomatic implants in 110 patients with a follow‐up between 6 months and 7 years

Clinical outcome of 302 zygomatic implants in 110 patients with a follow‐up between 6 months and 7 years

Masticatory muscle activity evaluation by electromyography in subjects with zygomatic implants

Zygomatic Implants Placed in Immediate Function through Extra-Maxillary Surgical Technique and 45 to 60 Degrees Angulated Abutments for Full-Arch Rehabilitation of Extremely Atrophic Maxillae: Short-Term Outcome of a Retrospective Cohort

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