Name: development of a direct pulp-capping model for the evaluation of pulpal wound healing and reparative dentin formation in mice
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Description: Watch this Scientific Journal Video about Development of a Direct Pulp-capping Model for the Evaluation of Pulpal Wound Healing and Reparative Dentin Formation in Mice at JoVE.com

מחקר זה מומן על ידי R01DE023348 (RHK) מ NIDCR / NIH ואת מענק מחקר הפקולטה (RHK) מהמועצה למחקר של הסנאט האקדמי של חטיבת לוס אנג&#39;לס של אוניברסיטת קליפורניה.

עכברים נרכשו מ ג&#39;קסון מעבדה ולעטוף ביבר חינם לפתוגן בחטיבת UCLA לרפואת בעלי חי מעבדה (DLAM). הניסויים בוצעו על פי ההנחיות מוסדיות המאושרות מן ועדת המחקר החי של הקנצלר (ARC # 2016-037). 1. עכבר הרדמה <ol style=";text-align:right;direction:rtl"><li style=";text-align:right;direction:rtl"> השתמ...

<ol>
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נכון לעכשיו, ישנם מספר דגמים ניסיוניים שונים זמינים כדי לאמת את השפעות in vivo של חומרים דנטליים, פיגומים, או גורמי גדילה על בידול odontogenic של תאי גזע עיסת שיניים (DPSCs) 13. מודלים אלה כוללים בהשתלה עצמית אקטופי של DPSCs לתוך איבר, כגון הקפסולה כליות, או השתלה תת עורית ש...

Dental caries are one of the most prevalent oral diseases and the leading cause of surgical interventions to dentitions in almost all individuals1,2. The prognosis of surgical interventions and restorations of a tooth largely depends upon proper pulpal response and successful wound healing. Indeed, dental caries that penetrate deeply through the enamel and dentin frequently lead to the exposure of the underlying pulp tissue that is often "capped" with dental materials, such as calcium hydroxide (Ca(OH)2) or hydraulic calcium-silicate cements (HCSCs), including mineral trioxide aggregates (MTA). The ultimate goal of such a pulp-capping procedure is to expedite pulpal wound healing by regenerating reparative dentin, a physical barrier that functions as a "biological seal" to protect the underlying pulp tissue and to increase the life expectancy of the tooth and the overall oral health. However, the underlying mechanism of pulpal wound healing and reparative dentin formation is not fully understood.
To better understand the mechanisms of pulpal wound healing and reparative dentin formation in vivo, several animals were previously used, including monkeys, dogs, and pigs3-5. Among them, rats are frequently used because they are relatively smaller in sizes compared to the other animals, but their teeth are large enough to perform direct pulp capping without any technical difficulties6-10. These animal models are ideal alternatives to human studies for examining pulpal responses and reparative dentin formation. However, their utilization is limited to observational studies at the cellular level, and they scarcely provide mechanistic insights during reparative dentin formation at the molecular level.
Recent technical advances in genetic engineering provided invaluable and indispensable research tools-mice that harbor a gene that is either overexpressed or deleted-that are instrumental to studying molecular mechanisms of human diseases in vivo. The numbers of different strains of transgenic or knockout mice that are strategically inducible in a cell-specific manner are continually growing in the scientific community. Therefore, examining pulpal wound healing and reparative dentin regeneration in these mice would greatly help to expedite our understanding of these processes at the molecular level. However, the use of mice is significantly dampened, as performing a pulp-capping procedure on a mouse tooth is technically challenging due to its miniature size. Here, we present our reproducible method of performing direct pulp capping in mice for the evaluation of pulpal wound healing and reparative dentin formation in vivo.

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			<td height="21" style="height:21px;width:164px;">BM-LED stereo microscope</td>
			<td style="width:164px;">MEIJI Techno</td>
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			<td style="width:173px;">Microscope&#160;</td>
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			<td height="21" style="height:21px;">Optima MCX-LED&#160;</td>
			<td>Bien Air Dental</td>
			<td>1700588-001</td>
			<td>Electic motor engine</td>
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			<td>Henry schein animal health</td>
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			<td>Roydent</td>
			<td>98947</td>
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			<td height="21" style="height:21px;">Paper point</td>
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			<td>Ultradent product Inc.</td>
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			<td height="21" style="height:21px;">OptiBond SoloPlus</td>
			<td>Kerr</td>
			<td>29669</td>
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			<td height="21" style="height:21px;">Coltolux LED</td>
			<td>Coltene/whaledent Inc.</td>
			<td>C7970100115</td>
			<td>Curing light unit</td>
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			<td height="21" style="height:21px;">Characterization tint</td>
			<td>Bisco</td>
			<td>T-14012</td>
			<td>Flowable composite</td>
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			<td height="21" style="height:21px;">Skyscan</td>
			<td>Breuker</td>
			<td>1275</td>
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			<td height="21" style="height:21px;">Microm</td>
			<td>Thermo</td>
			<td>HM355S</td>
			<td>Microtome</td>
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			<td height="21" style="height:21px;">Hematoxyline-1</td>
			<td>Thermo Scientific</td>
			<td>7221</td>
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			<td height="21" style="height:21px;">Eosin-Y</td>
			<td>Thermo Scientific</td>
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			<td height="21" style="height:21px;">Cytoseal 60</td>
			<td>Thermo Scientific</td>
			<td>8310-16</td>
			<td>Mounting solution</td>
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development of a direct pulp-capping model for the evaluation of pulpal wound healing and reparative dentin formation in mice

Dental pulp is a vital organ of a tooth fully protected by enamel and dentin. When the pulp is exposed due to cariogenic or iatrogenic injuries, it is often capped with biocompatible materials in order to expedite pulpal wound healing. The ultimate goal is to regenerate reparative dentin, a physical barrier that functions as a "biological seal" and protects the underlying pulp tissue. Although this direct pulp-capping procedure has long been used in dentistry, the underlying molecular mechanism of pulpal wound healing and reparative dentin formation is still poorly understood. To induce reparative dentin, pulp capping has been performed experimentally in large animals, but less so in mice, presumably due to their small sizes and the ensuing technical difficulties. Here, we present a detailed, step-by-step method of performing a pulp-capping procedure in mice, including the preparation of a Class-I-like cavity, the placement of pulp-capping materials, and the restoration procedure using dental composite. Our pulp-capping mouse model will be instrumental in investigating the fundamental molecular mechanisms of pulpal wound healing in the context of reparative dentin in vivo by enabling the use of transgenic or knockout mice that are widely available in the research community.

הנה, הראינו את שלב-אחר-צעד נהלים לבצע עיסת מכסת על השיניים עכברים. אחד ההיבטים המרכזיים של עיסת מכסה בעכברים הוא לקבל את המנגנון המתאים. בהקשר זה, שיש מיקרוסקופ עם הגדלה כוח 10X חיוני (איור 1 א). כדי ליצור הכנת Class-I-כמו השן, השתמשנו בר ¼-סיבוב במא?...

Watch this Scientific Journal Video about Development of a Direct Pulp-capping Model for the Evaluation of Pulpal Wound Healing and Reparative Dentin Formation in Mice at JoVE.com

Development of a Direct Pulp-capping Model for the Evaluation of Pulpal Wound Healing and Reparative Dentin Formation in Mice

אנו מתארים שיטת צעד אחרת צעד ביצוע עיסה ישירה מכסה על שיני עכברים להערכת ריפוי פצע pulpal והיווצרות הדנטין מתקן in vivo.

פיתוח מודל ישיר מכסת-זול עבור הערכת pulpal ריפוי פצע גיבוש מתקנת הדנטין של עכברים

Dental pulp is a vital organ of a tooth fully protected by enamel and dentin. When the pulp is exposed due to cariogenic or iatrogenic injuries, it is ...

Research

JoVE Journal

Medicine

Murine Model of Wound Healing

מודל עכברי של ריפוי פצע

Wound healing and repair are the most complex biological processes that occur in human life. After injury, multiple biological pathways become activated. ...

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

העכברי אנדוסקופיה ל<em&gt; בVivo</em&gt; ריפוי Multimodal הדמיה של היווצרות הסרטן וההערכה של מעיים פצע ודלקת

Mouse models are widely used to study pathogenesis of human diseases and to evaluate diagnostic procedures as well as therapeutic interventions ...

Creation and Transplantation of an Adipose-derived Stem Cell (ASC) Sheet in a Diabetic Wound-healing Model

Creation and Transplantation of an Adipose-derived Stem Cell ASC Sheet in a Diabetic Wound-healing Model

יצירת והשתלות של גיליון נגזר שומן בתאי גזע (ASC) במודל של ריפוי פצע סוכרתי

Artificial skin has achieved considerable therapeutic results in clinical practice. However, artificial skin treatments for wounds in diabetic patients ...

In Vivo Evaluation of Fracture Callus Development During Bone Healing in Mice Using an MRI-compatible Osteosynthesis Device for the Mouse Femur

In Vivo Evaluation of Fracture Callus Development During Bone Healing in Mice Using an MRI-compatible Osteosynthesis Device for the Mouse Femur

אין ויוו הערכה של שבר פיתוח קסם במהלך עצם הריפוי בעכברים שימוש בהתקן התואם ל- MRI Osteosynthesis את העכבר אתי

Endochondral fracture healing is a complex process involving the development of fibrous, cartilaginous, and osseous tissue in the fracture callus. The ...

Microscopy Based Methods for the Assessment of Epithelial Cell Migration During In Vitro Wound Healing

Microscopy Based Methods for the Assessment of Epithelial Cell Migration During  In Vitro Wound Healing

מיקרוסקופ המבוסס על שיטות להערכה של נדידת תאים אפיתל במהלך במבחנה ריפוי הפצע

Cell migration is a mandatory aspect for wound healing. Creating artificial wounds on research animal models often results in costly and complicated ...

A Minimally Invasive Model to Analyze Endochondral Fracture Healing in Mice Under Standardized Biomechanical Conditions

מודל פולשנית לניתוח שבר Endochondral ריפוי בעכברים בתנאים מתוקננים ביו-מכני

Bone healing models are necessary to analyze the complex mechanisms of fracture healing to improve clinical fracture treatment. During the last decade, an ...

Corneal Epithelial Abrasion with Ocular Burr As a Model for Cornea Wound Healing

אפיתל שחיקה הקרנית עם עינית Burr כמודל עבור קרנית ריפוי פצעים

The murine cornea provides an excellent model to study wound healing. The cornea is the outermost layer of the eye, and thus is the first defense to ...

The Generation of Closed Femoral Fractures in Mice: A Model to Study Bone Healing

הדור של שברי הירך סגור בעכברים: מודל ללמוד ריפוי עצם

Bone fractures impose a tremendous socio-economic burden on patients, in addition to significantly affecting their quality of life. Therapeutic strategies ...

Ex Vivo Corneal Organ Culture Model for Wound Healing Studies

Ex-Vivo איברים הקרנית מודל תרבות עבור ריפוי פצעים מחקרים

The cornea has been used extensively as a model system to study wound healing. The ability to generate and utilize primary mammalian cells in two ...

Targeting Gray Rami Communicantes in Selective Chemical Lumbar Sympathectomy

פילוח רמי אפור Communicantes ב Sympathectomy סלקטיבית המותני כימי

Chemical lumbar sympathectomy (CLS) is a commonly used, minimally invasive procedure for the treatment of conditions including ischemic diseases of the ...