andras.forster.dmd

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@andras.forster.dmd

Inspired by the post of @clairethedentist @dr.melissa_seibert , I set out to check my light-curing units (LCUs). Our Morita Pencure 2000 is not under too much use and it provides 1200/2200 mW/cm2 instead of the factory 1000/2000 value. The D-light Pro is my go to LCU, and has an HP/LP output of 1400/700 mW/cm2 according to the manufacturer. Originally it was able to provide these values on the same radiometer I use today. After more than 4 years of use, it has an output of 1125/475. (!!!) The scientific literature on the topic, documemts decreased output due to the aging of the battery . A review on Li batteries in an engineering paper found that the Lithium Titanium Oxide (LTO) chemistry would be ideal for these kinds of batteries since we do not discharge them and the state of charge (SOC) is usually mid to high. The LiPo battery in the D-light does well on high SOC but does not react well to heating...The D-light does not have active cooling and some times it feels hot. Talking to my childhood friend @comoyacht - he told me that the decrease in battery capacity does not necessarily result in a decrease in output. Probably there is software protection that lowers the output as the battery capacity reaches the critical 80%. It would take an LTO battery 6000 cycles (probably counted as 6000 charges by the software) to degrade to this value. Calculating with an LTO battery and 10 uses per 240 working days a year the LCU will probably need a battery change after 2-3 years. The optical elements of the LCU also need to be checked. Ours was full of scratches which could lead to further reduction in output. Conclusion: Measure Your LCUs at least yearly and change the batteries and/or curing tips when the output drops. . . . . #odontologia #dentistry #odonto #dentist #dental #dentalstudent #teeth #odontologiaestetica #prosthodontics #rubberdam #rubberdamology #teeth #composite #cosmeticdentistry #dentalphotography #biomimeticdentistry #стоматология #zubneproteze #zubnilekarstvi #stomatologie #stomatologija #zobozdravstvo #Zahnheilkunde #zahn #zahnartz #zahnmedizin #zahnartzpraxis #fogorvos #odontoiatriaestetica #odontiatria #stomatologiaestetyczna


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12 January 2022

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@clairethedentist @dr.melissa_seibert @comoyacht

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#odontologia #dentistry #odonto #dentist #dental #dentalstudent #teeth #odontologiaestetica #prosthodontics #rubberdam #rubberdamology #teeth #composite #cosmeticdentistry #dentalphotography #biomimeticdentistry #стоматология #zubneproteze #zubnilekarstvi #stomatologie #stomatologija #zobozdravstvo #Zahnheilkunde #zahn #zahnartz #zahnmedizin #zahnartzpraxis #fogorvos #odontoiatriaestetica #odontiatria #stomatologiaestetyczna

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