13 бет - Ең жақсы стоматологияның стоматологтар - ЖОҒ-918 дәрігерлер

Контент Bookimed редакциялық саясатына сәйкес келеді және оның сапасын тексерген

Kanokporn Lramaneerat

  • 4.7 Керемет 3 пікірлер
  • 27 жылдар тәжірибе
  • Таиланд, Баңкөк, Intrarat Hospital
  • DR.KANOKPORN LRAMANEERAT

     

    Orthodontist

     

    Graduated (M.D. From)

    Doctor of Dentistry, Chulalongkorn University, 2nd class honors

    (Ph.D.) Doctor of Orthodontics, Tokyo Medical and Dentistry University

     

    Orthodontic treatment is for dental abnormalities, including: Crooked teeth. Bite problems, like an overbite or an underbite.

     

    Current Positions

    Orthodontist at Intrarat Hospital

  • Толығырақ оқу
Тiстердi композиттерді пайдаланып қалпына келтіру (бондинг)
$250 - $550
Тіс өсiгiн орнату
$1,000 - $1,500
Ақпарат

lee Joo Hee

  • Жаңа
  • 25 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Sinchon Dain Dental Hospital
Тістерді седациямен емдеу
$340.72 - $340.72
Цирконий тәжін орнату
$477.01 - $545.16
Имплант пен қаптаманы орнату
$613.3 - $613.3
Ақпарат

Kang Dong-ho

  • Жаңа
  • 22 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Yonsei Uline Dental Clinic
  • Dr. Kang Dong-ho

    Chief Director | Prosthodontist | Implant Specialist

    Profile Summary

    With over 22 years of clinical experience, Dr. Kang Dong-ho is a highly respected prosthodontist and implant specialist in Korea. He holds a Ph.D. in Prosthodontics from Yonsei University and has served as a department head, educator, and clinical researcher. Dr. Kang is known for his precision in advanced prosthodontic care, implant surgeries, and clear aligner treatments like Invisalign.

     Education & Certifications

    Ph.D. in Prosthodontics, Yonsei University College of Dentistry

    Completed Prosthodontics Program, Yonsei University

    Certified in Integrated Medical Treatment by the Ministry of Health and Welfare

    Certified Invisalign Provider

    Professional Experience

    Adjunct Professor, Yonsei University College of Dentistry

    Former Head of Prosthodontics, Yonsei University Yongin Severance Dental Hospital

    Director, Yonsei University Gangnam Severance Implant Research Association

    Completed Mini-Residency, Yonsei University Gangnam Severance Dental Hospital

    Over 22 years of clinical experience in prosthodontics and dental implantology

    Academic & Society Memberships

    Full Member, Korean Academy of Prosthodontics

    Recognized Specialist, Korean Academy of Prosthodontics

    Full Member, Korean Academy of Oral & Maxillofacial Implantology

  • Толығырақ оқу
Хирург портфолиосы
Дәрігерге бару
Бағасы сұрау бойынша
Ақпарат

Kwahk Do Eun

  • Жаңа
  • 15 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Sinchon Dain Dental Hospital
Тістерді седациямен емдеу
$340.72 - $340.72
Цирконий тәжін орнату
$477.01 - $545.16
Имплант пен қаптаманы орнату
$613.3 - $613.3
Ақпарат

Lee Gon Mo

  • Жаңа
  • 17 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Sinchon Dain Dental Hospital
Тістерді седациямен емдеу
$340.72 - $340.72
Цирконий тәжін орнату
$477.01 - $545.16
Имплант пен қаптаманы орнату
$613.3 - $613.3
Ақпарат

Chae Min Jong

  • Жаңа
  • 15 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Sinchon Dain Dental Hospital
Тістерді седациямен емдеу
$340.72 - $340.72
Цирконий тәжін орнату
$477.01 - $545.16
Имплант пен қаптаманы орнату
$613.3 - $613.3
Ақпарат

Cho Wyu Sang

  • Жаңа
  • 15 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Sinchon Dain Dental Hospital
Тістерді седациямен емдеу
$340.72 - $340.72
Цирконий тәжін орнату
$477.01 - $545.16
Имплант пен қаптаманы орнату
$613.3 - $613.3
Ақпарат

Shin Byung Yol

  • Жаңа
  • 15 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Sinchon Dain Dental Hospital
Тістерді седациямен емдеу
$340.72 - $340.72
Цирконий тәжін орнату
$477.01 - $545.16
Имплант пен қаптаманы орнату
$613.3 - $613.3
Ақпарат

Bum Seung Gyun

  • Жаңа
  • 22 жылдар тәжірибе
  • Оңтүстік Корея, Сеул, Yonsei Uline Dental Clinic
  • Dr. Bum Seung Gyun
    Prosthesis Specialist – Director

    Professional Summary

    Dedicated prosthodontist with extensive clinical training and a strong academic foundation in prosthetic and restorative dentistry. Dr. Bum is a certified Conservative Specialist and holds memberships in several prestigious dental academies, reflecting his commitment to excellence and continued education in advanced dental care.

    Education & Training

    Internship & Residency in Prosthodontics
    Wonkwang University Dental College Hospital

    Licensure & Certification

    Conservative Specialist, certified by the Ministry of Health and Welfare

    Professional Affiliations

    Full Member, Korean Academy of Prosthodontics

    Full Member, Korean Academy of Advanced General Dentistry

    Full Member, Korean Academy of Stomatognathic Function and Occlusion

  • Толығырақ оқу
Дәрігерге бару
Бағасы сұрау бойынша
Ақпарат

Betul Balli Demirel

  • Жаңа
  • 10 жылдар тәжірибе
  • Түркия, Істанбұл, İstinye Dental Hospital
  • Education & Specialization

    2009 to 2014 Başkent University Faculty of Dentistry

    2017 to 2021 Biruni University Faculty of Dentistry Orthodontics-Ph.D.

    Experience

    •2015 Baskent University Dental Hospital (Istanbul)-General Dentist

    •2016 Hospitadent Dental Hospital-General Dentist

    •Hospitadent Dental Hospital-Orthodontic Specialist

    Courses & Certifications

    •Damon Master Academy Course-June 1, 2021

    •Myobrace Course-November 2, 2021

    •Invisalign Provider Certificate-November 7, 2020

    Professional Memberships

    •Member of Turkish Dentists

    •Member of Turkish Orthodontic Society

    •Member of Turkish Aligner Association

    Research and Articles

    •Demirel B, Gülyurt M. Fixed Functional Appliance Treatment of Class 2 Division II Young Adult Patient: Case Report. 17. Türk Orthodontics Derneği Sanal Kongresi.2021.

  • Толығырақ оқу
Керамикалық тәж орнату
$144.24 - $173.09
Nobel Biocare жүйесін имплантациялау
$940.45 - $940.45
Тіс имплантациясы
$288.48 - $1,084.69
Ақпарат

Kristina Haska

  • Жаңа
  • 7 жылдар тәжірибе
  • Албания, Тирана, DenTour Albania
  • Dr. Kristina began their journey in stomatology in 2013, enrolling in University of Tirana, where they developed a strong foundation in dental medicine. After five years of dedicated study, they graduated in 2018 with a degree in stomatology.

    General Dentist  March 2022 – March 2024

    • Provided comprehensive dental care, including preventive, restorative, and cosmetic treatments.
    • Diagnosed and treated oral health conditions, ensuring personalized patient care.
    • Educated patients on oral hygiene and preventive care practices.
    • Collaborated with dental specialists to develop optimal treatment plans.

    Dental Assistant November 2021 – March 2022

    • Assisted dentists in complex procedures, ensuring seamless workflow and patient comfort.
    • Prepared treatment rooms and sterilized dental instruments following strict hygiene protocols.
    • Managed patient records and provided administrative support to enhance clinic efficiency.

    Assistant Dentist October 2020 – March 2021

    • Assisted in various dental procedures, including restorative and prosthetic treatments.
    • Conducted initial patient assessments and provided pre- and post-treatment care.
    • Maintained a high standard of infection control and sterilization procedures.

    Intern Dentist June 2020 – June 2021

    • Gained hands-on experience in diagnosing and treating diverse dental conditions under faculty supervision.
    • Assisted in minor oral surgeries, extractions, and endodontic treatments.
    • Developed essential patient management skills and enhanced treatment planning abilities.

    Dental Assistant May 2018 – August 2019

    • Provided chairside assistance to dentists during examinations and treatments.
    • Prepared and maintained dental instruments, ensuring compliance with hygiene standards.
    • Assisted in scheduling appointments and managing patient inquiries.
  • Толығырақ оқу
Invisalign жүйесімен тістің түзетiлуі
$1,961.68 - $2,654.04
Тіс өсiгiн орнату
$346.18 - $346.18
Уақытша эстетикалық протез
$346.18 - $692.36
Ақпарат

Dr Hgjfh Jfg

  • Жаңа
  • 75 жылдар тәжірибе
  • Грекия, Салоникі, Veselibu Clinic
Зубтарды All-on-4 ("төртеуіне бәрі") технологиясы бойынша имплантациялау
$2,000 - $3,000
Люминирды орнату
$700 - $995
Ақпарат

Fanny Martínez Lopez

  • 4.8 Керемет 4 пікірлер
  • 6 жылдар тәжірибе
  • Мексика, Канкун, YeahSmile
  • Dr. Fanny Martínez López

    ABOUT ME

    I am a dental surgeon with over five years of experience providing comprehensive and aesthetic dental care. I specialize in oral rehabilitation and general dentistry, focusing on minimally invasive and highly aesthetic techniques. My practice is centered on patient comfort, satisfaction, and achieving long-term oral health outcomes. I am a dedicated professional committed to delivering high-quality, personalized treatments.

    ACADEMIC BACKGROUND

    • Bachelor’s in Dental Surgery

    National Autonomous University of Mexico (UNAM)

    • Diploma in Prosthetics and Advanced Aesthetics

    IAOP

    • Participation in Dental Congresses: Over 10 annual editions of Amic Dental

    AREAS OF EXPERTISE

    • General Dentistry: Comprehensive evaluations and preventive and restorative treatments aimed at holistic oral health.

    • Oral Rehabilitation: Utilizing minimally invasive and highly aesthetic techniques to restore dental functionality and appearance.

    • Preventive Dentistry: Development of programs promoting oral hygiene education and topical applications to reduce the incidence of dental diseases.

    • Teeth Whitening and Stain Correction: Procedures to remove stains caused by conditions like fluorosis, ensuring optimal aesthetic results.

    • Implant Rehabilitation: Restoring dental implants to achieve functional and aesthetic integration within the patient’s dental arch.

    • Dental Extractions: Performing simple and surgical extractions based on case complexity and patient needs.

    • Root Canal Treatments: Conducting endodontic procedures to preserve teeth affected by infections or pulp injuries.

    • Dental and Periodontal Infection Control: Implementing strict protocols to treat infections in dental and periodontal tissues.

    SCIENTIFIC RESEARCH

    • Participated in two symposiums and a clinical case competition at Universidad de Ixtlahuaca CUI, focusing on the topic of 'Oral Health in Mexican University Students Based on Hygiene Habits and Dental Consultations.'

    • Presented on 'Dental Tourism' at the 'Contemporary Dentistry' symposium, exploring the intersections of dentistry and tourism and their implications for modern dental care.

    WORK EXPERIENCE

    • Over 5 years in dentistry: Began as a dental assistant performing basic procedures like cleanings and whitening. After earning my dental surgeon degree, I started a private practice offering a broad range of general dentistry treatments with a focus on minimally invasive and aesthetic oral rehabilitation.

    • Volunteer Work: Collaborated with the Mexican Dental Association Foundation for five years, participating in brigades providing preventive and rehabilitative treatments for children and adults in various communities across central Mexico.

    • Current Role: Working at a high-standard dental clinic specializing in aesthetic and rehabilitative dentistry, designing personalized treatment plans tailored to each patient’s needs.

    CERTIFICATIONS AND MEMBERSHIPS

    • Diploma in Prosthetics and Advanced Aesthetics (IAOP)

    • Training in Dental Research and Scientific Investigation

    • Training in Systemic Disease Prevention and Oral Health Education

    • Training in Proper Brushing Techniques and Fluoride Application

    • Advanced Modules in Dental Care During Pregnancy, Local Anesthesia, Internal Medicine, and Pharmacology for Infection Management.

    • Active member and volunteer at the Mexican Dental Association

    SKILLS AND SERVICES OFFERED

    • Comprehensive care for patients of all ages, including children, adolescents, and adults.

    • Expertise in managing patients with dental anxiety, focusing on aesthetic rehabilitation and promoting healthy oral habits.

    • Specialization in minimally invasive aesthetic dental rehabilitation, including veneers and crowns, tailored to individual needs.

    • Advanced knowledge of dental technology, such as digital X-rays and 3D scanners, enabling precise diagnostics and efficient treatments.

    TECHNOLOGY USED

    • Digital X-rays: High-quality imaging with reduced radiation exposure.

    • 3D Scanners: Accurate diagnosis and personalized treatment planning.

    • Dental Lasers: Effective teeth whitening and patient comfort enhancement.

    COMMUNITY INVOLVEMENT

    • Volunteered with the Mexican Dental Association Foundation, promoting oral health through preventive treatments and education in underserved communities.

    AWARDS AND RECOGNITION

    • First place in a poster competition at the International Dentistry Congress in Boca del Río with the topic ‘Biopsy Procedures for Systemically Compromised Patients.’

    COMMITMENT TO CONTINUING EDUCATION

    I actively participate in dental congresses and courses to stay updated with the latest advancements in dentistry. My dedication to lifelong learning ensures the highest quality care for my patients, combining cutting-edge techniques, treatments, and technologies with personalized attention to meet their needs.

    LANGUAGES

    • Spanish

    • English

  • Толығырақ оқу
Импланттарға арналған All-on-6 комбинацияланған протездеу
$30,000 - $32,160
Зубтарды All-on-4 ("төртеуіне бәрі") технологиясы бойынша имплантациялау
$10,927 - $21,854
Элайнерлер
$1,600 - $2,440
Ақпарат

Aunjida Chawanarojnarit

  • 4.7 Керемет 3 пікірлер
  • 20 жылдар тәжірибе
  • Таиланд, Баңкөк, Intrarat Hospital
  • Graduated (M.D. From)

     

    Doctor of Dentistry, 2nd class honors, Prince of Songkhla University

    (second honor, Songklanakarin University)

    Master of Science in Oral Surgery and Implantology, Srinakharinwirot University

     

    Current Positions

    Oral Surgeon at Intrarat Hospital

     

     

     

     

     

     

     

     

     

     

     

     

     

     

  • Толығырақ оқу
Тiстердi композиттерді пайдаланып қалпына келтіру (бондинг)
$250 - $550
Тіс өсiгiн орнату
$1,000 - $1,500
Ақпарат

Burcin Arican Alpay

  • Жаңа
  • 15 жылдар тәжірибе
  • Түркия, Істанбұл, Bahçeşehir University Dental Hospital
  • She was born in Giresun in 1986. After graduating from Istanbul Köy Hizmetleri HighSchool, she studied dentistry in Marmara University, Faculty of Dentistry between 2004-2010. She got his Phd degree from Marmara University, Faculty of Dentistry, Department of Endodontics. She worked as endodontic specialist in private clinics nearly 3 years. She worked as an Assisstant Professor between 2017 and 2022. She received the title of Associate Professor in 2022. She conducted 2 TUBITAK projects. She conduct multidisiplinary studies in which microbiology, genetic, artificial intelligence, rational drug use are blended with endodontics.

  • Толығырақ оқу
Зубтарды All-on-4 ("төртеуіне бәрі") технологиясы бойынша имплантациялау
$7,967.88 - $19,181.76
Ақпарат

Zafer Beyza Hancioglu Kircelli

  • Жаңа
  • 28 жылдар тәжірибе
  • Түркия, Істанбұл, Bahçeşehir University Dental Hospital
  • Prof. Dr. Beyza Hancıoğlu Kırcelli

     

     

     

    Dr. Kırcelli graduated from Hacettepe University, Faculty of Dentistry in 1997. After completing her PhD program in orthodontics at Çukurova University in 2003, she started to practice at Başkent University Adana Medical and Research Center. In 2004 she was appointed as full-time academic staff at Başkent University and in 2009 she received associate professor degree. In 2010 she started her own private practice, partnered with her prosthodontist husband. Since then, she has a busy clinic in Adana. Dr. Kırcelli appointed as professor at the Istanbul Aydin University in 2021; she lectured and supervised PHD students of orthodontics for two years. Dr. Kırcelli is currently lecturing as a professor at Bahçeşehir University Faculty of Dentistry, Head of the Department of Orthodontics. Also, provides orthodontic treatment services at BAU Dental Hospital for orthodontic patients.

    Dr. Kırcelli is a member of American Orthodontic Association, World Federation of Orthodontists, Turkish Orthodontic Society, Lingual Orthodontic Society-TR, Turkish Aligner Society. In addition, she is a titular member of European Society of Lingual Orthodontics (ESLO) since 2016. She received the titular member title according to presentation of five completed lingual cases with one year follow-up results to the scientific board of ESLO. Dr. Kırcelli received the “Best Speaker of the Session” prize at the 11th ESLO congress held in Como, Italy in 2014; and at the 12th ESLO congress in Athens, Greece in 2016, respectively.

    Dr. Kırcelli is an active user of the Incognito Lingual System since 2007 and has been involved in the “Incognito Key Opinion Leadership” founded by 3M. She is a qualified educator and certificate provider of the IncognitoTM Lingual Appliance System since 2013. She gave certification courses and several lectures nationally and internationally for lingual orthodontics (hidden braces) with the Incognito Appliance System.

    Dr. Kırcelli is also a provider for Invisalign clear aligner system since 2019. Since then, she mainly practices with clear aligners for all age groups comprising growing patients and adults. In 2021 she received Invisalign Diamond Provider title from Align Technology according to the number of patients started with Invisalign in that year.

    Dr. Kırcelli’s area of interests are esthetic orthodontic applications with clear aligners and lingual appliances; also, orthodontics combination with orthognathic surgery, use of temporary anchorage devices (miniscrews-miniplates) in orthodontics, temporomandibular joint focused orthodontics and digital dentistry.

  • Толығырақ оқу
Зубтарды All-on-4 ("төртеуіне бәрі") технологиясы бойынша имплантациялау
$7,967.88 - $19,181.76
Ақпарат

Kadriye Merve Altikat

  • Жаңа
  • 6 жылдар тәжірибе
  • Түркия, Істанбұл, İstinye Dental Hospital
  • Specialization: Periodontology

    Areas of Interest

    -Gum Diseases

    -Treatment of Peri-Implant Diseases

    -Bone Loss Therapies

    -Gum Aesthetics

    -Halitosis (Mouth Odor)

    Education

    2018 – DDS, Başkent University Faculty of Dentistry

    2021 – Undergraduate in Health Management, Anadolu University

    2022 – Ph.D. in Periodontology, Gazi University

    Professional Experience

    2018 to 2022 – Research Assistant, Gazi University, Department of Periodontology

    2021–Present – Head, Istinye University Oral and Dental Health Program

    2021–Present – Trainer, Praticmed Dentistry (Suture & Flap Closure Training)

    Courses & Certifications

    -Suture & Flap Closure Training in Dentistry (Trainer), 2021

    -TDB International Dentistry Congress, 2022

    -ERDİŞ International Dentistry Congress (Oral Presentation), 2023

    -Emergency Skills in Oral and Maxillofacial Surgery, London, UK, 2016

    -AOCMF Course, Craniomaxillofacial Fracture Management, İzmir, 2016

    -Bego Implant Advanced Surgery Course, Germany, 2014

    Professional Memberships

    -Turkish Dental Association (TDB)

    -Turkish Periodontology Association

    -KÖKDİŞ National Council

    Research & Publications

    A New Dimension in Periodontal Regenerative Therapy: 3D Cell Culture. ADO Klinik Bilimler, 2023.

    Doctoral Thesis: Evaluation of the osteogenic potential of periodontium-derived mesenchymal stem cells in 2D and 3D culture environments.

  • Толығырақ оқу
Керамикалық тәж орнату
$144.24 - $173.09
Nobel Biocare жүйесін имплантациялау
$940.45 - $940.45
Тіс имплантациясы
$288.48 - $1,084.69
Ақпарат

Asli Usta Tahmaz

  • Жаңа
  • 6 жылдар тәжірибе
  • Түркия, Істанбұл, İstinye Dental Hospital
  • Specialization: Endodontics

    Areas of Interest

    -General Dentistry and Oral Diagnosis

    -Non-surgical Periodontal Treatments (Dental Scaling)

    -Esthetic Direct and Indirect Restorative Treatments

    -Endodontic Treatments (Root Canal Therapy)

    -Interdepartmental Consultation and Patient Referral

    Education

    2019 – DDS, Marmara University, Faculty of Dentistry

    2019 to 2020 – Istanbul Medipol University, Faculty of Dentistry

    Professional Experience

    2022 to 2023 – Sina Oral and Dental Health Center

    2023 to 2024 – Avrupa Dental Acıbadem Oral and Dental Health Clinic

    Professional Memberships

    -Turkish Dental Association (TDB)

    -Turkish Endodontic Society (Türk Endodonti Derneği)

    Courses & Certifications

    -FDI World Dental Congress, 2024

    -15th International Congress of the Turkish Endodontic Society, 2023

    -9th International Endodontic Symposium, 2022

  • Толығырақ оқу
Керамикалық тәж орнату
$144.24 - $173.09
Nobel Biocare жүйесін имплантациялау
$940.45 - $940.45
Тіс имплантациясы
$288.48 - $1,084.69
Ақпарат

Ipek Nejla Guldiken

  • Жаңа
  • 13 жылдар тәжірибе
  • Түркия, Істанбұл, İstinye Dental Hospital
  • Specialization: Oral and Maxillofacial Radiology

    Areas of Interest

    -Embedded (Impacted) Tooth Surgery

    -Dental Implant Surgery

    -Maxillary Sinus Lifting Operations

    -Jawbone Corrections

    -Soft Tissue Corrections

    Education

    2007 to 2012 – DDS, Marmara University (English) Faculty of Dentistry

    2012 to 2017 – Specialization in Oral and Maxillofacial Surgery, Istanbul Medipol University Faculty of Dentistry

    Professional Experience

    Doctor Faculty Member, Department of Oral and Maxillofacial Surgery, Istanbul Medipol University / Esenler Health and Research Hospital

    2021 – Private Skydent Oral and Dental Health Polyclinic

    2021 – Private Etemoğlu Oral and Dental Health Polyclinic

    Courses & Certifications

    5th Brussels Orthognathic Atomium Course, 2015

    AO-CMF Course – Management of Facial Trauma, Tehran, 2016

    AO-CMF Course – Advances in Orthognathic Surgery, Tehran, 2016

    Professional Memberships

    -International Association of Oral and Maxillofacial Surgery (IAOMS)

    -European Association for Cranio-Maxillo-Facial Surgery (EACMFS)

    -Turkish Society of Oral and Maxillofacial Surgery (TAOMS)

    -AÇBİD (Oral and Maxillofacial Surgery Association)

    -International Team for Implantology (ITI)

    -AO Foundation (AO-CMF)

  • Толығырақ оқу
Керамикалық тәж орнату
$144.24 - $173.09
Nobel Biocare жүйесін имплантациялау
$940.45 - $940.45
Тіс имплантациясы
$288.48 - $1,084.69
Ақпарат

Antonio Mastropaolo

  • Жаңа
  • 7 жылдар тәжірибе
  • Италия, Модена, Tommaso Grandi Dental Clinic
  • Dr. Antonio Mastropaolo is a dentist who specializes in prosthetic and restorative dentistry. He earned his degree in Dentistry and Dental Prosthetics from the University of Chieti “G. D’Annunzio.” At Tommaso Grandi Dental Clinic, Dr. Mastropaolo provides precise prosthetic treatments such as crowns, bridges, and full-mouth rehabilitations. He uses digital protocols and works closely with the in-house laboratory to create custom restorations. Dr. Mastropaolo is known for his attention to detail and commitment to delivering durable, natural-looking results.

  • Толығырақ оқу
Тіс имплантациясы All-on-6 ("алтауынан бәрі") технологиясы бойынша
$9,231.43 - $9,231.43
Зубтарды All-on-4 ("төртеуіне бәрі") технологиясы бойынша имплантациялау
$6,923.57 - $6,923.57
Тамыр өзектерін емдеу
$219.25 - $346.18
Ақпарат