跟读练习: Peripheral Seal Zone Concept (PSZ) in Biomimetic Restorative Dentistry - 通过视频学习英语口语

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Hello, I'm doctor David Alleman.
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I've been a practicing dentist for 44 years.
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I've been teaching biomimetic restorative dentistry for the last 25 years.
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And the success of the biomimetic approach is so superior to traditional adhesive approaches or traditional mechanical approaches that I believe every dentist will benefit by learning these new protocols.
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So the peripheral zone was a new concept the Pascal Magne And I introduced in 2012.
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13 years ago we were implementing techniques for over ten years that use this concept, but it didn't have a name.
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In other words, when we had advanced adhesive techniques, we were able to mitigate C-factor and mitigation.
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C-factor is the key idea to maximize your bond strengths.
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And so once we had a maximization of bond strengths and a restoration we did not need mechanical retention form.
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We did not need mechanical resistance form.
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Traditional process that onyx gives you retention form and resistance formed by a two millimeter vertical collar of existing two structure.
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And that is what the crown rests on.
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This two millimeters now is turned sideways in advanced adhesive dentistry to decrease the see factor.
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It's still two millimeters but it's flat instead of vertical.
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And so the peripheral seal zone is the substitution in advanced adhesive dentistry for what traditional prosthodontics calls a ferrule So the ferrule is not needed and in many cases is actually contraindicated in a biomimetic approach.
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And of course, if you're a traditional trained the dentist as of the vast majority of dentists are of the world.
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Particularly with a bias towards traditional prosthodontics and taught by prosthodontists then you're not going to understand what the peripheral seal zone is, but it is the surface that retains the restoration and that surface area if it's maximized in the area in the, DEJ area, which we call the dentino enamel junction or The dentino enamel complex.
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Then you're getting a bond strength of around 50 Mega pascals.
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Now, 50 mega pascals is enough to hold enamel on to dentin in 99.999% of teeth that never have a restoration.
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So we know that that strength, if that's our goal, we might say, well, if we can't get 50 because we don't have as good a bonding system or we don't have as good of techniques, the lower key factors stresses, then what would we need to have something that's like a tooth and the number that I've come up with over the years from my, 44 years of practice and teaching dentists these techniques for over 25 years is you need something that's above the cohesive strength of enamel.
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We know what that is.
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When you measure enamel and you pull it apart, it takes 30 mega pascals to pull apart.
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And the bond strengths of 30 are very, very reachable in almost all surfaces in a decayed or fractured tooth that you treat biomimetic early to prepare for the restoration.
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And so your goal is to have a bond system that is 30 to 50 mega pascals around the pulp, and then one to the right next to the pulp, or even with the pulp exposure.
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If we can seal that in somewhere around ten to 15 or 20 mega pascals in these areas that are the most difficult to bond to closest to the pulp, then we have something that will last for decades.
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And we know that because we've been doing this for decades.
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We're now into our third decade.
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So I would encourage all of you, if you'd like to know more about the peripheral seal zone.
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We'll have links on this video.
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And if you want to learn more about the training programs that we have, we will.
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You can find our upcoming in-person and online programs, that are linked to this video description.
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Till next time, get bonded. Stay bonded.

为什么要通过这个视频练习口语？

通过观看和模仿医生David Alleman的讲解，你不仅可以提升你的英语口语能力，还能深入了解生物仿生修复牙科的前沿概念——周边密封区（Peripheral Seal Zone）。这种练习将帮助你在真实的对话环境中运用医学术语，提高英语发音，使你在雅思口语练习中更加自信。

利用英语影子跟读的技巧，跟随视频中的节奏和语调，将让你在心理上和语音上都更好地掌握英语。这种方式不仅能增强你的听力理解，还能加强你对医学领域相关术语的记忆，提高你在学术交流时的表达能力。

语法与表达方式

在这个视频中，David博士使用了几种关键的表达结构，帮助我们更好地理解专业内容：

  • 比较句型：他比较了生物仿生方法与传统方法的优缺点，使用了“比…更…”这样的比较表达。这种结构在英语中常用于展示不同方法、观点或产品之间的区别。
  • 条件句：例如，他提到“如果我们无法达到50 Mega pascals的强度…”这种句型用于表达假设条件，适合在讨论专业内容时使用。
  • 祈使句：最后，David博士鼓励听众去了解更多内容时，用了“我建议你…”这种祈使句式，使得表达更为亲切和积极。

常见发音陷阱

在视频中，有几个较难发音的单词和短语需要注意：

  • “dentino enamel junction”：对于许多学习者来说，准确发音这个专业名词可能会有困难。注意音节的重音和连读，使得发音更加流畅。
  • “cohesive strength”和“bond strengths” ：这两个短语中的“strength”容易因为语音原因而发错。确保你的发音清晰，尤其是在雅思口语练习中，清晰的发音会给考官留下良好印象。
  • “mega pascals”：这个单位在不同语境中也可能会被误读。适度练习，以达到标准的发音和语调。

通过看YouTube学英语，结合这些发音练习，你将有效提升你的提高英语发音能力，助力你的英语学习旅程！

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。