Prosojni silikonski ključki za injekcijsko tehniko in njihove prilagoditve : diplomsko delo

Mihelič, Ajda (author), Bohinc, Peter (mentor), Trebše, Polonca (reviewer)

Uvod: Injekcijska tehnika omogoča prenos načrtovane oblike zob v ustno votlino s prosojnim silikonskim ključkom in tekočim kompozitom. Lastnosti uporabljenega silikona ter zasnova ključka vplivajo na njegovo stabilnost, preglednost in uporabo med injiciranjem kompozita. Namen: Cilj diplomskega dela je primerjati prosojne silikonske materiale in različne prilagoditve ključkov za uporabo pri injekcijski tehniki. Metode dela: Pregledali smo strokovno literaturo in izdelali različne prilagoditve prosojnih silikonskih ključkov iz materialov Exaclear in Memosil 2. Primerjali smo njihovo stabilnost, togost oziroma fleksibilnost, preglednost ter zahtevnost nameščanja in odstranjevanja. Ocenili smo tudi pojav zračnih mehurčkov pri polimerizaciji silikona pod tlakom in brez tlaka. Na podlagi ugotovitev smo izdelali lastno prilagoditev ključka in jo uporabili pri rehabilitaciji pacienta. Rezultati: Material Exaclear je bil fleksibilnejši in preglednejši, zato je omogočal lažje nameščanje in odstranjevanje ključka, medtem ko je bil Memosil 2 bolj tog. Pri ključku iz materiala Exaclear, ki ni bil polimeriziran pod tlakom, smo opazili več zračnih mehurčkov. Med primerjanimi prilagoditvami se je kot najprimernejša izkazala različica »vsak drugi zob«. Zaradi težav z iztekanjem kompozita smo izdelali ključek s cervikalnimi in aproksimalnimi podporniki ter ga združili s prilagoditvijo »vsak drugi zob«. Izbrani ključek je omogočal stabilno namestitev in boljši nadzor nad iztekanjem kompozita. Razprava in zaključek: Primerjava je pokazala, da trdota Shore A ni edina lastnost, ki vpliva na uporabo prosojnega silikonskega ključka. Pomembne so tudi druge mehanske in optične lastnosti materiala ter zasnova ključka. Pri našem kliničnem primeru se je kot najprimernejša izkazala kombinacija materiala Exaclear, cervikalnih in aproksimalnih podpornikov ter prilagoditve »vsak drugi zob«. Digitalno načrtovanje je omogočilo razvoj izboljšane zasnove ključka na podlagi ugotovljenih pomanjkljivosti drugih prilagoditev.

• Language: Slovenian
• Keywords: diplomska dela, laboratorijska zobna protetika, injekcijska tehnika, prosojni silikonski ključek, PVS, prosojni silikon, prilagoditve ključkov
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: ZF - Faculty of Health Sciences
• Place of publishing: Ljubljana
• Publisher: [A. Mihelič]
• Year: 2026
• Number of pages: IX, 38 str., [6] str. pril.
• PID: 20.500.12556/RUL-187267
• UDC: 616.31
• COBISS.SI-ID: 290587907
• Publication date in RUL: 09.09.2026

Secondary language

• Language: English
• Title: Translucent silicone matrices for the injection technique and their modifications : diploma work

Abstract

Introduction: The injection technique enables the transfer of the planned tooth morphology into the oral cavity using a transparent silicone index and a flowable composite resin. The properties of the silicone material and the design of the index influence its stability, transparency, and ease of use during composite injection. Aim: The aim of this bachelor's thesis was to compare transparent silicone materials and various modifications of silicone indices used in the injection technique. Methods: A review of the scientific literature was conducted, and various modifications of transparent silicone indices made from Exaclear and Memosil 2 materials were fabricated. Their stability, rigidity or flexibility, transparency, and the ease of placement and removal were compared. The occurrence of air bubbles during silicone polymerization under pressure and without pressure was also evaluated. Based on the findings, a custom modification of the silicone index was developed and applied in the rehabilitation of a patient. Results: Exaclear was more flexible and transparent, allowing easier placement and removal of the silicone index, whereas Memosil 2 was more rigid. A greater number of air bubbles was observed in Exaclear indices that had not been polymerized under pressure. Among the evaluated modifications, the "every other tooth" design proved to be the most suitable. To reduce composite leakage, a silicone index with cervical and interproximal supports was developed and combined with the "every other tooth" modification. The selected silicone index provided stable positioning and improved control over composite leakage. Discussion and conclusion: The comparison demonstrated that Shore A hardness is not the only property influencing the clinical use of a transparent silicone index. Other important factors include the mechanical and optical properties of the material as well as the design of the index. In the presented clinical case, the combination of Exaclear material, cervical and interproximal supports, and the "every other tooth" modification proved to be the most appropriate. Digital planning enabled the development of an improved silicone index design based on the identified limitations of the other modifications.

• Keywords: diploma theses, laboratory dental prosthetics, injection technique, transparent silicone index, PVS, transparent silicone, silicone index modifications