Related Experiment Video
Updated: Feb 11, 2026

05:28
Enucleation of the Prostate for the Treatment of Benign Prostatic Hyperplasia Using a 980 nm Diode Laser
Published on: May 5, 2020
2.8K
Gingival melanin depigmentation by 810 nm diode laser
1Private Practice, Istanbul, Turkiye.
European Journal of Dentistry
|April 17, 2018
Summary
This study shows that using an 810 nm diode laser effectively removes dark gum pigmentation caused by smoking. The laser depigmentation procedure resulted in excellent aesthetic outcomes and high patient comfort with no adverse effects.
Area of Science:
- Periodontology
- Laser Dentistry
Background:
- Gingival pigmentation, influenced by melanin, affects aesthetics.
- Smoking is a common cause of darkened gums.
- Melanocytes in the epithelium produce melanin, determining gingival color.
Observation:
- Two female patients presented with darkened gums due to heavy smoking.
- Diffuse melanin pigmentation was observed in both maxilla and mandible.
- An 810 nm diode laser was used for gingival depigmentation under local anesthesia.
Findings:
- The 810 nm diode laser treatment was performed at 1.3 W power in continuous mode.
- Patients experienced no postoperative pain or edema.
- Complete healing was observed by week 12 post-procedure.
Implications:
- 810 nm diode laser is a successful method for gingival depigmentation.
- The procedure offers significant aesthetic improvements.
- High patient comfort and minimal side effects are noted.
More Related Videos
Related Concept Videos
Zener Diodes
1.3K
Zener diodes are specialized semiconductor devices designed to operate in the reverse breakdown region, where they allow current to flow into the cathode, making it positive relative to the anode. This reverse operation distinguishes Zener diodes from conventional diodes and enables their use in various applications, most notably as voltage regulators. One of the defining characteristics of Zener diodes is their nearly vertical I-V (current-voltage) characteristic curve above a certain...
1.3K
The Ideal Diode
2.2K
A diode is a semiconductor device that allows current to flow in one direction only, making it a crucial component in electronic circuits for controlling the direction of current flow. An ideal diode is a simplified version of a real diode used to understand how diodes work in circuits. It possesses two terminals: the positive anode and the cathode, which is negative. When a positive voltage is applied to the anode relative to the cathode, the diode is in a forward-biased state, allowing...
2.2K
Diode: Forward bias
2.3K
In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...
The behavior of a diode in forward bias...
2.3K
Modeling of Diode Forward Characteristics
1.2K
Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
1.2K
Diode: Reverse bias
2.1K
A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
2.1K
Small-signal Diode Model
1.6K
In analyzing the behavior of diodes in circuits, the relationship between the current through a diode and the voltage across it is of particular interest, especially when considering the effect of a direct current (DC) bias voltage. When applied, this DC bias influences the diode's operating point, known as the Q point, around which the current-voltage (I-V) characteristic of the diode exhibits exponential behavior. Introducing a small, time-varying signal on top of this bias aids in examining...
1.6K

