LONG-TERM CLINICAL SUCCESS
A case series review of early REX PiezoImplant designs included clinical data from five clinical centers for 56 patients (20 M; 35 F; ages: 24-81; mean age: 59.7). A total of 111 implants were placed in edentulous ridges ranging from 2 – 5 mm with an average width of 3.3 mm. Clinical outcomes over the first three years after loading were evaluated in relation to patient discomfort, implant stability, radiographic bone loss, and exudate history per the ICOI International Health Scale.1
Outcomes after 5+ years of loading were evaluated in terms of implant survival and marginal bone loss, assessed radiographically. Bone level measurements were made on each radiographic image using an image elaboration software using the implant dimensions for scale. The implant shoulder was used as the reference across timepoints and bone level changes were assessed using the time of loading as baseline. Survival at 5+ years was 92.8% (103/111) and mean bone level change following implantation across all time points was -0.68 (±1.05) mm. Overall, several implants showed a net marginal bone gain over time and no implant exhibited marginal bone loss greater than 1.5mm, with 94.6% of implants meeting bone loss acceptability (≤1 mm at year one plus 0.2 mm/per year thereafter).2
- Misch CE, Perel ML, Wang H-L, et al.: Implant Success, Survival, and Failure: The International Congress of Oral Implantologists (ICOI) Pisa Consensus Conference. Implant Dentistry, 17 (1):5-15, 2008.2).
- Kline R, Hoar JE, Beck GH, et al. A prospective multicenter clinical investigation of a bone quality-based dental implant system. Implant Dent. 2002;11:224-234.
CLINICAL OUTCOMES OVER THE FIRST THREE YEARS AFTER LOADING
BONE LEVEL CHANGE AFTER 5 YEARS OF LOADING
“WEDGE-SHAPED IMPLANTS FOR MINIMALLY INVASIVE TREATMENT OF NARROW RIDGES” A MULTICENTER PROSPECTIVE COHORT STUDY.
Vercellotti T, Troiano G, Oreglia F, Lombardi T, Gregorig G, Morella E, Rapani A, Stacchi C.
Abstract: The present study aims to investigate clinical and patient-centered outcomes after the implant-supported rehabilitation of narrow ridges using a novel wedge-shaped implant. Forty-four patients were treated with the insertion of 59 tissue-level wedge implants (1.8 mm bucco-lingual width) in horizontally atrophic ridges (mean bone width 3.8 0.4 mm). The main outcome measures were: implant stability quotient (ISQ), marginal bone loss (MBL) and patient morbidity. Fifty-eight implants were functioning satisfactorily after one year of loading (98.3% survival rate). ISQ values measured in the mesio-distal direction resulted significantly higher than those in the bucco-lingual direction at all time points (p < 0.001). Both mesio-distal and bucco-lingual ISQ values at 6-month follow-up resulted significantly higher than at 4-month follow-up (p < 0.001 for both). Mean MBL
was 0.38 0.48 mm at prosthesis delivery (6 months after implant insertion) and 0.60 0.52 mm after one year of functional loading. The majority of patients reported slight discomfort related to the surgical procedure. Postoperative pain score was classified as mild pain on the day of surgery and the first postoperative day and no pain over the following five days. Within the limitations of the present study, the device investigated showed low morbidity and positive short-term clinical results in narrow ridges treatment.
J Clin Med 2020. 9:3301; doi:10.3390/jcm9103301 https://www.mdpi.com/2077-0383/9/10/3301/htm 
PAPERS
New Operative Protocol for Immediate Post-Extraction Implant in Lower-First-Molar Region with Rex-Blade Implants: A Case Series with 18 Months of Follow-Up
Fabrizio Bambini, Lucia Memè, Roberto Rossi, Andrea Grassi, Serena Grego, Stefano Mummolo
Applied Sciences 2023, 13, 10226 (https://www.mdpi.com/2076-
Abstract:
In this manuscript, the authors propose a new technique for inserting implants immediately into the sockets corresponding to the lower first molars and, in any case, in the sockets in which the alveolar septum is still present. Immediate post-extraction implants are a widely discussed topic in the literature. Most authors currently consider the insertion of implants immediately after extraction less useful in terms of the procedure’s questionable benefits in maintaining the height of the alveolar bone and more useful in terms of lessening patients’ discomfort. Due to the anatomy of the post-extraction socket and its traditionally cylindrical geometry, this procedure is not always possible.
Next-generation REX-type blade implants were used via their insertion into the septum accompanied by a cortical lamina for periosteal inhibition without filling any of the alveoli.
In the 20 patients treated, the REX implant proved to be stable and surrounded by newly formed bone at the 18-month follow-up. This simple, easily employable technique allows an implant to be inserted immediately after extraction and in the same surgical session, with good patient compliance and good preservation of the alveolus due to the facilitation of periosteal inhibition. The excellent clinical results obtained with the use of a blade implant in the posterior sectors suggest that it is possible to reduce surgical sessions even in conditions of post-extraction sockets whose septum alone can ensure the primary stability essential for osseointegration. The use of a larger number of patients will also provide us with significant statistical results in support of this preliminary clinical work. New clinical studies are needed to understand the true potential of this method for application in daily clinical practice.
A New Wedge-Shape Dental Implants for Narrow Bone Ridge: REX Piezoimplant, a Case Report With 12 Months of Follow-Up
Lucia Memè, Stefano Mummolo, Enrico M. Strappa, Fabrizio Bambini, Gianni Gallusi
American Journal of Biomedical Science & Research. 2022. 16(3):295-300 (https://biomedgrid.com/
Abstract:
Objective: The purpose of this study was to report the surgical protocol used in implant prosthetic rehabilitation with REX PiezoImplant type TL1.8 (Rex TL, Rex Implants, Columbus, OH, USA).
Methods: A 54-year-old patient was enrolled in the study. Clinical and radiographic examination (CBCT) showed severe bone atrophy of the maxilla. The preparation of the implant sites was performed with piezoelectric instruments and a specific sequence of inserts (SLC, W1, W2, W3, and W4). The implants were inserted with the REX IPD magnetic hammer achieving a slight bone expansion.
Results: The patient was strictly monitored monthly for up to 12 months. The final prosthesis was delivered 5 months after surgery. CBCT performed at the end of the study demonstrated good osseointegration of the implants and the absence of periimplant bone resorption.
Conclusions: The use of REX PiezoImplants can be considered a valid minimally invasive surgery technique in atrophic bone crests, which do not allow the insertion of traditional implants without bone regeneration procedures.
CASE REPORTS
